- Track-Type Tractor:
- D10T (S/N: RJG1-UP)
Introduction
Revision     | Summary of Changes in REHS3183     |
06     | Standardized.     |
05     | Updated Table 12.     |
04     | Updated Introduction and Tables 12 and 13.     |
03     | Updated Introduction and Tables 12 and 13.     |
02     | Added new introduction and Canceled Part Numbers section.     |
© 2015 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.
This special instruction contains the necessary information that is required to bench test a specific transmission arrangement. Refer to Table 2 for the correct arrangements. Bench testing the transmission ensures correct assembly and operation of the component. Rotating a transmission provides the most conclusive evaluation. Testing allows the dealer to ensure that the transmission will operate properly in the machine. The specifications in this guideline are specific to bench testing the component. Every effort has been made in order to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This guideline must be used with the latest technical information that is available from Caterpillar.
For questions or additional information concerning this guideline, submit a form for feedback in the Service Information System. In order to address an urgent issue, use the following resources in order to communicate your request to Caterpillar Repair Process Engineering:
- Caterpillar Dealer Technical Communicator
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Machine Model     | Transmission Arrangement     |
D10T     | 213-5171     |
Canceled Part Numbers and Replaced Part Numbers
This document may include canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.
Important Safety Information
Illustration 1 | g02139237 |
Follow all safety warnings. Most accidents that involve product operation, maintenance, or repair are caused by failure to observe safety warnings. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. Personnel must be properly trained in order to perform maintenance, repair, or operate any machine. Safety precautions and warnings are provided this instruction and on Caterpillar products. These warnings should be observed before performing any procedures. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are not all inclusive.
The hazards are identified by the "Safety Alert Symbol" which is followed by a "Signal Word" such as "DANGER", "WARNING, or" "CAUTION". The "WARNING" Safety Alert Symbol is shown in illustration below.
Illustration 2 | g00008666 |
This safety alert symbol means:
Pay Attention!
Become Alert!
Your Safety is Involved.
The message that appears under the safety alert symbol explains the hazard.
Operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.
Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.
The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.
Collecting the Test Data
Since conditions vary for each test bench, to use the data that is collected from your test bench. The collected data is used to compare test results. The data should be collected and maintained by the operator.
Data from each transmission arrangement is collected and stored. Averages from each transmission arrangement are used in order to compare values on portions of this transmission test. Always compare data that is collected from the same transmission arrangement that is being tested. Averages for the last 20 transmission arrangements should be maintained.
Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak. |
Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. |
Personal injury or death can result from not following the proper procedures. To avoid the possibility of injury or death, follow the established procedure. |
Tools Needed
Note: Pressures will be sensitive to tooling setup. The diameter of the hose, the diameter of a fitting, and additional filtering can affect pressure. The required tools that are listed in Table3 were used to develop this test procedure.
Required Tools     | |||
---|---|---|---|
Tool     | Part Number     | Part Description     | Qty     |
A     | 1U-9584     | Rail As     | 1     |
FT-2979 | Support Assembly (1)     | 1     | |
4C-4768 | Support     | 1     | |
B     | 110-9311     | Yoke As     | 1     |
C     | 4C-4627     | Adapter     | 1     |
0S-1613 | Bolt (1/2-20X1.5 inch)     | 4     | |
5P-8245 | Hard Washer     | 4     | |
D     | 136-3647     | Drive Adapter Assembly     | 1     |
0S-1594 | Bolt (3/8-16X1 inch)     | 4     | |
5M-2894 | Hard Washer     | 4     | |
E     | 1U-9131     | Drive Adapter (Key)     | 1     |
0L-1351 | Bolt (3/8-16X7/8 inch)     | 4     | |
F     | 439-3939     | Link Bracket As     | 2     |
1A-0458 | Bolt (3/4-10X1.75 inch)     | 2     | |
4B-5273 | Washer     | 2     | |
1U-9722 | Ratcheting Turnbuckle     | 3     | |
G     | 1U-9885     | Adapter (Plate)     | 1     |
9M-9647 | O-Ring Seal     | 3     | |
8C-9024 | Nipple Assembly (Plain)     | 3     | |
2A-1531 | Bolt (1/2-13X6.5 inch)     | 2     | |
5P-8245 | Hard Washer     | 4     | |
1F-7958 | Full Nut     | 2     | |
H     | 9U-7500     | Transmission Analyzer Tool Gp     | 1     |
OR | |||
277-2362 | Transmission Analyzer III Gp     | 1     | |
306-0397 | Extension Cable     | 1     | |
256-7623 | Adapter Cable Assembly (Test) (2)     | 1     | |
300-4993 | Adapter Cable Assembly (Test) (3)     | 1     | |
M     | 146-4080     | Digital Multimeter     | 1     |
J     | 8T-0855     | Pressure Gauge (0 to 4,000 kPa (0 to 580 psi))     | 1     |
6V-4144 | Coupler     | 1     | |
K     | 8T-0853     | Pressure Gauge (0 to 400 kPa (0 to 58 psi))     | 1     |
6V-4144 | Coupler     | 1     | |
L     | 6V-3965     | Nipple (Quick Disconnect)     | 5     |
( 1 ) | Refer to Illustration 3 for further information. |
( 2 ) | Use this cable for 17 pin connectors. |
( 3 ) | Use this cable for 14 pin connectors. |
Illustration 3 | g01256261 |
Installation Procedure
- Install Tooling (A) to the input end of the transmission.
Illustration 4 | g03886945 |
- Install Tooling (A) to the rear end of the transmission.
Illustration 5 | g01256263 |
- Use a hoist to install the transmission on the test bench. The weight of the transmission is 1504 kg (3315 lb).
- Install Tooling (C) on Tooling (B) .
Illustration 6 | g01256264 |
- Install Tooling (D) on Tooling (C) .
Illustration 7 | g01256265 |
- Install Tooling (E) on Tooling (D) .
Illustration 8 | g01256267 |
- Install the tooling setup on the input drive shaft.
Illustration 9 | g01256268 |
- Align the transmission to the input drive shaft.
Illustration 10 | g01256273 |
- Connect the input drive shaft to Tooling (E) .
- Install the drive shaft guard.
Illustration 11 | g01256274 |
Typical Example |
- Tighten all four castle nuts and jack bolts.
Illustration 12 | g03802221 |
- Install Tooling (F) to the transmission to prevent movement during testing.
Illustration 13 | g01256275 |
- Install Tooling (G) in the transmission case.
Illustration 14 | g01256277 |
- Connect hose assembly (1) from the pressurized flow meter to Tooling (G) .
Note: The flow meter will measure the flow of the supply oil.
Illustration 15 | g01256278 |
- Connect hose assembly (2) from Tooling (G) to the No. 2 flow meter inlet.
Note: The No. 2 flow meter will measure the oil flow that is returning to the test bench.
- Connect hose assembly (3) from the No. 2 flow meter outlet to Tooling (G) .
- Connect a pressure gauge to pressure tap (4) .
Illustration 16 | g01256279 |
Transmission Lubrication Pressure |
Note: If you are using individual pressure gauges to measure the pressures, refer to Table 3 for the correct pressure gauges.
- Connect a pressure gauge to pressure tap (5) .
Illustration 17 | g01256280 |
Main Supply Pressure |
- Remove cover plate (6) .
Illustration 18 | g01256283 |
- Install Tooling (L) to locations (7), (8), (9), (10), and (11) on the transmission control group.
Illustration 19 | g01256547 |
(7) No. 1 clutch (8) No. 2 clutch (9) No. 4 clutch (10) No. 3 clutch (11) No. 5 clutch |
- Install pressure gauges to Tooling (L) .
- Connect Tooling (H) to the transmission.
Illustration 20 | g01256289 |
- Connect Tooling (H) to a suitable location.
Illustration 21 | g01256286 |
- Cover the transmission. Use a suitable clean cover.
Illustration 22 | g01256287 |
- Connect Tooling (H) to a power source. Refer to Tool Operating Manual, NEHS0644 or Tool Operating Manual, NEHS0996 for the correct operating instructions.
Note: Make sure that the transmission is secured to the test bench. Tighten all bolts to the proper torque.
Illustration 23 | g01256288 |
Tooling (H) |
Illustration 24 | g01457869 |
Tooling (H) |
Test Procedure
TA3 Navigation
- Select "Dozers".
- Select "D10T-24V".
Harness Test (TA3 only)
- Make sure that the harness is properly connected.
- Use Tooling (H) to perform the harness test.
- Record the values in Table 7.
Note: Do not continue testing until Harness Test passes.
Solenoid Test (TA2 only)
- Make sure that the harness is properly connected.
- Use Tooling (H) to perform the solenoid test.
- Record the values in Table 7.
Note: Do not continue testing until Solenoid Test passes.
Start Checks
- If you are using SAE 10W oil, warm the oil to 50 °C (125 °F). If you are using Mobil DTE11 oil, warm the oil to 34 °C (95 °F). Maintain this temperature for the duration of the test.
Note: Refer to Testing and Adjusting, RENR7547, "D10T Track-Type Tractor Power Train".
- Adjust the input flow to 64 ± 4 L/min (17 ± 1 US gpm).
- Check the supply pressure. The correct supply pressure is 2790 ± 70 kPa (405 ± 10 psi).
- With the transmission in the NEUTRAL position, rotate the input shaft in a counterclockwise direction. Adjust the input rotation to 700 ± 30 rpm.
Note: The input shaft will be rotated in a counterclockwise direction for the duration of this test. The direction is determined as you face the drive motor of the test bench.
Illustration 25 | g02720621 |
- The lubrication pressure must be between 21 kPa (3 psi) and 35 kPa (5 psi) to continue.
Note: If there is no lube pressure after 3 seconds, stop input rotation and check connections on test bench and transmission.
- Record the value in Table 8.
- Shift the transmission through all gears to eliminate air from the transmission controls.
- Confirm the correct clutch engagement with Table 4.
Show/hide table
Table 4 Clutch Engagement Check     Gear     Cl 1     Cl 2     Cl 3     Cl 4     Cl 5     N             X             F1         X             X     F2         X         X         F3         X     X             R1     X                 X     R2     X             X         R3     X         X            
Clutch Leakage Check
- Adjust the input flow to 189 ± 4 L/min (50 ± 1 US gpm).
- Adjust the input rotation to 2130 ± 30 rpm in the NEUTRAL position.
- The lubrication pressure must be between 220 kPa (32 psi) and 245 kPa (35 psi) to continue.
- Record the value in Table 9.
- Check the supply pressure. The correct supply pressure is 3150 ± 138 kPa (457 ± 20 psi).
- Adjust the input rotation to 700 ± 30 rpm.
- Shift the transmission to FORWARD 1.
- Adjust the input rotation to 2130 ± 30 rpm.
- Record the input flow in Table 9.
- Record the output flow in Table 9.
- The leakage is obtained by subtracting the output flow from the input flow.
- Record the calculation in Table 9.
- Adjust the input rotation to 700 ± 30 rpm.
- Shift the transmission through positions FORWARD 2, FORWARD 3, REVERSE 1, REVERSE 2, REVERSE 3, and NEUTRAL. Repeat Steps 8 through 12 for each gear range.
Note: Always shift the transmission back to NEUTRAL when shifting between FORWARD to REVERSE.
- The difference in leakage between SECOND gear and THIRD gear should not exceed 2.3 L/min (0.6 US gpm).
- The difference in leakage between FIRST gear and all other gears must not exceed 3.0 ± 0.8 L/min (0.8 ± 0.2 US gpm) of the average for this arrangement. Reference for the maximum allowable leakage is 6.1 ± 3.0 L/min (1.6 ± 0.8 US gpm).
Note: Refer to ""Collecting the Test Data" " for further information.
Lube Circuit Check
- Adjust the input flow until the lube flow is 76 ± 4 L/min (20 ± 1 US gpm).
- Adjust the input rotation to 700 ± 30 rpm.
- Shift the transmission to FORWARD 2.
- Adjust the input rotation to 2130 ± 30 rpm.
- The lubrication pressure must be within 7 kPa (1 psi) of the average for this transmission arrangement. Reference is 76 ± 7 kPa (11 ± 1 psi).
Note: Refer to ""Collecting the Test Data" " for further information.
- Record the value in Table 10.
Speed Sensor Test
- Adjust the input flow to 53 ± 4 L/min (14 ± 1 US gpm).
Note: This transmission arrangement has two speed sensors that must be tested.
- Adjust the input rotation to 700 ± 5 rpm.
- Shift the transmission to FORWARD 1.
- Connect Tooling (M) to Tooling (H) .
Illustration 26 | g03372856 |
- Use Tooling (M) to measure the sensor signal voltage. Measure each speed sensor.
- Record the values in Table 11.
- The minimum voltage should be 2.1 V for each speed sensor.
High Idle Pressure Check
- Adjust the input flow to 189 ± 4 L/min (50 ± 1 US gpm).
- Adjust the input rotation to 700 ± 30 rpm.
- Shift the transmission into FORWARD 1.
- Adjust the input rotation to 2130 ± 30 rpm.
- Record the pressure values in Table 13.
- Repeat Steps 1 through 5 for all gear ranges.
Transmission Bench Test Data Sheet
CATERPILLAR     | Transmission Bench Test Data Sheet     | Test Date:_______     |
Model:_______ | ||
Work Order:_______     | Serial No.:_______     |
Specifications
Specifications     | ||
Description     | High Idle     | Low Idle     |
Input Speed     | 2130 ± 30 rpm     | 700 ± 30 rpm     |
Pressures     | ||
Supply Pressure     | 3150 ± 138 kPa (457 ± 20 psi)     |
2790 ± 70 kPa (405 ± 10 psi)     |
Lubrication Pressure     | 221 kPa (32 psi)     |
28 kPa (4 psi)     |
Solenoid Test
Solenoid Test     | Solenoid 1     | Solenoid 2     | Solenoid 3     | Solenoid 4     | Solenoid 5     |
________ ohms | ________ ohms     | ________ ohms     | ________ ohms     | ________ ohms     |
Start Checks
Lubrication Pressure     | Input Speed (700 ± 30 rpm) Input Flow 64 ± 4 L/min (17 ± 1 US gpm) Supply Pressure 2790 ± 70 kPa (405 ± 10 psi)     |
_______kPa _______(psi)     |
Clutch Leakage Check
Clutch Leakage Check     | Input Speed (2130 ± 30 rpm) Input Flow 189 ± 4 L/min (50 ± 1 US gpm) Supply Pressure 3150 ± 138 kPa (457 ± 20 psi)     |
||||||
Gear Range     | 1F     | 2F     | 3F     | 1R     | 2R     | 3R     | N     |
Input Flow     | ______     | ______     | ______     | ______     | ______     | ______     | ______     |
Output Flow     | ______     | ______     | ______     | ______     | ______     | ______     | ______     |
Leakage     | ______     | ______     | ______     | ______     | ______     | ______     | ______     |
Average of Arrangement     | ______     | ______     | ______     | ______     | ______     | ______     | ______     |
Lube Circuit Check
Lube Circuit Check     | Gear Range FORWARD 2 Input Speed (2130 ± 30 rpm) Lube Flow 76 ± 4 L/min (20 ± 1 US gpm)     |
||
Average Lubrication Pressure Of Arrangement     | _______kPa _______(psi)     |
Lubrication Pressure     | _______kPa _______(psi)     |
Speed Sensor Test
Speed Sensor Test     | Input Speed (700 ± 5 rpm) Input Flow 53 ± 4 L/min (14 ± 1 US gpm) Gear Range FORWARD 1     |
|
Output Speed Sensor 1     | __________________ volts     | |
Output Speed Sensor 2     | __________________ volts     |
High Idle Pressure Check
Final Pressure Checks (High Idle)     | Input speed ( 2130 ± 30 rpm) Input flow 189 ± 4 L/min (50 ± 1 US gpm)     |
|||||
Clutch     | No. 1     | No. 2     | No. 3     | No. 4     | No. 5     | |
Speed Position     | Engaged Clutches     | Pressure (1)     | Pressure (1)     | Pressure (1)     | Pressure (1)     | Pressure (2)     |
NEUTRAL     | 3     |     |     | 2790 kPa (405 psi)     |
    |     |
FORWARD 1     | 2 and 5     |     | 2790 kPa (405 psi)     |
    |     | 2790 kPa (405 psi)     |
FORWARD 2     | 2 and 4     |     | 2790 kPa (405 psi)     |
    | 2790 kPa (405 psi)     |
    |
FORWARD 3     | 2 and 3     |     | 2790 kPa (405 psi)     |
2790 kPa (405 psi)     |
    |     |
REVERSE 1     | 1 and 5     | 2790 kPa (405 psi)     |
    |     |     | 790 2205 kPa (405 psi)     |
REVERSE 2     | 1 and 4     | 2790 kPa (405 psi)     |
    |     | 2790 kPa (405 psi)     |
    |
REVERSE 3     | 1 and 3     | 2790 kPa (405 psi)     |
    | 2790 kPa (405 psi)     |
    |     |
( 1 ) | The Tolerance is ± 100 kPa ( ± 14 psi). |
( 2 ) | The Tolerance is ± 200 kPa ( ± 29 psi). |
Final Pressure Checks (High Idle)     | Input speed ( 2130 ± 30 rpm) Input flow 189 ± 4 L/min (50 ± 1 US gpm)     |
|||||
Clutch     | No. 1     | No. 2     | No. 3     | No. 4     | No. 5     | |
Speed Position     | Engaged Clutches     | Pressure     | Pressure     | Pressure     | Pressure     | Pressure     |
NEUTRAL     | 3     |     |     |     |     |     |
FORWARD 1     | 2 and 5     |     |     |     |     |     |
FORWARD 2     | 2 and 4     |     |     |     |     |     |
FORWARD 3     | 2 and 3     |     |     |     |     |     |
REVERSE 1     | 1 and 5     |     |     |     |     |     |
REVERSE 2     | 1 and 4     |     |     |     |     |     |
REVERSE 3     | 1 and 3     |     |     |     |     |     |
ISO Particle Count
ISO Particle Count     | Sample the test bench oil supply.     |
________/________Particle Count     |
______________________________________ Technician     |
______________________________________ Supervisor     |