305 Excavator TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

305 Excavator TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565}

Usage:

305 DGT

Mini Hydraulic Excavator:: 305 (S/N: DGT1-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections are easy to do and surprisingly effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information will allow Dealers to intervene effectively before problems occur.

Note: Before adjusting product settings to comply with listed baseline TA2 values, consult SIS for the latest specification values.

Note: Specification values are based on the following machine settings unless stated otherwise

Engine Speed High Idle

Creating an Electronic Copy

Use the following procedure to create an editable electronic copy from SIS Web.

Click format to print.

Save the document as an HTML format.

Open the document with Microsoft Word.

Electrical System

Show/hide table

Table 1
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Inspect Battery Cables	Cables between the battery, the starter, and the engine ground must be the correct size. Wires and cables must be free of corrosion. Wires and cables must have cable support clamps in order to prevent stress on battery connections (terminals).
	Battery Test	12.4 VDC or more		Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
	Charging System Test	13.8 ± 0.5 VDC		Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
	Electric Starting System Test			Refer to Testing and Adjusting, RENR5547, "Electrical System Troubleshooting".

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Engine

Cooling System

Show/hide table

Table 2
Description	Specification	Comments
Radiator Pressure Relief (Radiator Cap) ⁽²⁾	-
Freezing Point of Engine Coolant	-	Use 245-5829 Coolant/Battery Tester Gp .
Conditioner Test of Engine Coolant	-	Use 8T-5296 Coolant Conditioner Test Kit .
Belt Tension	98 N (22 lb)	Mid way between pulleys for all belts. The belt should deflect 8 to 11 mm (0.3 to 0.4 inch).
Difference between the Upper Radiator Tank Temperature and Lower Radiator Tank Temperature	-
Jacket Water Inlet Temperature from Cooling System	76.5° ± 1.5°C (169.7° ± 34.7°F)

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Test for the pressure that is listed on the cap.

Basic Engine

Show/hide table

Table 3
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	Engine Performance - Test (Engine Speed)
	No Load High Idle ⁽²⁾	2520 ± 40 rpm		2370 to 2620 rpm
	No Load Low Idle	1150 ± 40 rpm		1150 ± 100 rpm
	Maximum speed with load ⁽³⁾	2400 rpm ⁽⁴⁾	2300 rpm ⁽⁴⁾	2200 rpm ⁽⁴⁾
	No load speed ⁽⁵⁾	1150 ± 40 rpm		1150 ± 100 rpm

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Low idle switch in the OFF position
^( 3 )	Pressure is relieved from both pumps (stall condition).
^( 4 )	Minimum RPM
^( 5 )	Low idle switch in the ON position

Air Inlet and Exhaust System

Show/hide table

Table 4
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Inlet Manifold Pressure - Test
	Cylinder # 1 Exhaust Temperature ⁽²⁾
	Cylinder # 2 Exhaust Temperature ⁽²⁾
	Cylinder # 3 Exhaust Temperature ⁽²⁾
	Cylinder # 4 Exhaust Temperature ⁽²⁾
	Cylinder # 5 Exhaust Temperature ⁽²⁾
	Cylinder # 6 Exhaust Temperature ⁽²⁾
	Cylinder # 7 Exhaust Temperature ⁽²⁾
	Cylinder # 8 Exhaust Temperature ⁽²⁾

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Compare the exhaust temperature variance at each exhaust port.

Performance Checks

ReferenceRefer to Testing & Adjusting, RENR5556, "Operational Checks" for more detail on the following test.

Operational Checks

Travel on Level Ground - Test

Show/hide table

Table 5
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	Travel Time for 25 m (82 ft) (time in seconds) ⁽²⁾
	High Forward	14.6 to 17.6	19.0 or less	21.5 or less
	High Reverse	14.6 to 17.6	19.0 or less	21.5 or less
	Low Forward	25.0 to 27.0	31.0 or less	35.0 or less
	Low Reverse	25.0 to 27.0	31.0 or less	35.0 or less
	Travel Deviation - Check
	High Forward	1200 mm (47 inch)	1500 mm (59 inch)	2000 mm (79 inch)
	High Reverse	1200 mm (47 inch)	1500 mm (59 inch)	2000 mm (79 inch)
	Low Forward	1200 mm (47 inch)	1500 mm (59 inch)	2000 mm (79 inch)
	Low Reverse	1200 mm (47 inch)	1500 mm (59 inch)	2000 mm (79 inch)

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	First 5 m (16.4 ft) is preliminary. Measure travel time for remaining 20 m (65.6 ft).

Travel on Level Ground - Test (Optional Test)

Show/hide table

Table 6
Time for Three Revolutions (time in seconds)
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	High Forward	11.1 to 13.5	14.5 or less	16.0 or less
	High Reverse	11.1 to 13.5	14.5 or less	16.0 or less
	Low Forward	19.1 to 21.1	23.5 or less	26.5 or less
	Low Reverse	19.1 to 21.1	23.5 or less	26.5 or less

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Machine Drift on a Slope - Check

Show/hide table

Table 7
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Machine Drift (mm (inch)) ⁽²⁾	35 mm (1.4 inch) Maximum

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	After 3 minutes

Swing Speed and Overswing on Level Ground - Check

Show/hide table

Table 8
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	Swing Time (three revolutions) (seconds)
	Right Swing ⁽²⁾	2.8 or less	3.2 or less	3.6 or less
	Left Swing ⁽²⁾	2.8 or less	3.2 or less	3.6 or less
	Continuous swing right	20.0 or less	22.0 or less	25.0 or less
	Continuous swing left	20.0 or less	22.0 or less	25.0 or less
	Overswing ⁽³⁾ (mm (inch))
	Right Swing	370 mm (14.6 inch) or less	452 mm (16.7 inch) or less	480 mm (18.9 inch)
	Left Swing	370 mm (14.6 inch) or less	452 mm (16.7 inch) or less	480 mm (18.9 inch)

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	90 degree swing operation
^( 3 )	Loaded bucket weight 210 kg (465 lb)

Swing Speed and Swing Drift on a Slope - Check

Show/hide table

Table 9
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Swing Speed on a Slope (90 degree swing) (minutes)
	Right Swing	3.0 or less
	Left Swing	3.0 or less
	Swing Drift (mm (inch)) ⁽²⁾
	Right Swing	0
	Left Swing	0

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Loaded bucket weight 180 kg (397 lb)

Cylinder Drift - Check

Show/hide table

Table 10
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	Loaded Bucket (mm (inch)) (3 minutes) ⁽²⁾
	Boom Cylinder	2.5 mm (0.10 inch) or less	3.0 mm (0.12 inch) or less	4.0 mm (0.16 inch) or less
	Stick Cylinder	6.0 mm (0.24 inch) or less	9.0 mm (0.35 inch) or less	15.0 mm (0.59 inch) or less
	Bucket Cylinder	6.0 mm (0.24 inch) or less	9.0 mm (0.35 inch) or less	15.0 mm (0.59 inch) or less
	Blade Cylinder	2.0 mm (0.08 inch) or less	3.0 mm (0.12 inch) or less	5.0 mm (0.20 inch) or less

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Weight of bucket load is 210 kg (465 lb)

Cylinder Speed - Check

Show/hide table

Table 11
Cylinder Speed (seconds)
Status ⁽¹⁾	Description	Specification		Service Limit	Comments
Status ⁽¹⁾	Description	New	Rebuild	Service Limit	Comments
	Boom Extension	2.9 ± 0.5	3.8 ⁽²⁾	4.4 ⁽²⁾
	Boom Retraction	2.6 ± 0.5	3.4 ⁽²⁾	3.9 ⁽²⁾
	Stick Extension	3.6 ± 0.5	4.7 ⁽²⁾	5.4 ⁽²⁾
	Stick Retraction	2.9 ± 0.5	3.8 ⁽²⁾	4.4 ⁽²⁾
	Bucket Extension	3.1 ± 0.5	4.0 ⁽²⁾	4.7 ⁽²⁾
	Bucket Retraction	2.1 ± 0.5	2.7 ⁽²⁾	3.2 ⁽²⁾
	Blade Extension	1.1 ± 0.2	1.4 ⁽²⁾	1.7 ⁽²⁾
	Blade Retraction	1.1 ± 0.2	1.4 ⁽²⁾	1.7 ⁽²⁾
	Boom Swing Extension ⁽³⁾	6.3 ± 0.5	8.2 ⁽²⁾	9.5 ⁽²⁾
	Boom Swing Retraction ⁽³⁾	5.2 ± 0.5	6.8 ⁽²⁾	7.8 ⁽²⁾
	Boom Swing Extension ⁽⁴⁾	5.2 ± 0.5	6.8 ⁽²⁾	7.8 ⁽²⁾
	Boom Swing Retraction ⁽⁴⁾	4.3 ± 0.5	5.6 ⁽²⁾	6.5 ⁽²⁾

Show/hide table

^( 1 )	N = Normal, M = Monitor, A = Action
^( 2 )	Maximum
^( 3 )	Left-hand swing (80 degrees)
^( 4 )	Left-hand swing (55 degrees)

Hydraulic System

ReferenceRefer to Testing & Adjusting, RENR5556, "Hydraulic Systems" for more detail on the following test.

Relief Valve (Pilot) - Test and Adjust

Show/hide table

Table 12
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Relief Valve (Pilot)	3400 ± 200 kPa (495 ± 30 psi)

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Accumulator (Pilot) - Test and Charge

Show/hide table

Table 13
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Pilot Accumulator	1035 kPa (150 psi)		Should stay above 1035 kPa (150 psi) within 1 minute.

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Main) - Test and Adjust

Show/hide table

Table 14
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Main Relief Valve Pressure at Pressure Tap (P1)	24500 + 1500 - 0 kPa (3553 + 218 - 0 psi)
	Main Relief Valve Pressure at Pressure Tap (P2)	24500 + 1500 - 0 kPa (3553 + 218 - 0 psi)
	Main Relief Valve Pressure at Pressure Tap (P3)	24500 + 1500 - 0 kPa (3553 + 218 - 0 psi)

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Line) - Test

Show/hide table

Table 15
Relief Valve (Line) - Test and Adjust
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Boom Head End	27900 ± 1500 kPa (4050 ± 220 psi)
	Boom Rod End
	Stick Head End
	Stick Rod End
	Bucket Head End

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

Relief Valve (Swing) - Test

Show/hide table

Table 16
Status ⁽¹⁾	Description	Specification	Actual	Comments
	Swing Relief Valve (Left Swing)	20000 ± 1000 kPa (2900 ± 145 psi)
	Swing Relief Valve (Right Swing)	20000 ± 1000 kPa (2900 ± 145 psi)

Show/hide table

^( 1 )

N = Normal, M = Monitor, A = Action

S.O.S

ReferenceRefer to Operation and Maintenance Manual, SEBU7428, "Maintenance Interval Schedule" for more detail on the following S.O.S.

Show/hide table

Table 17
Status ⁽¹⁾	Description	Obtain	Comments
	Engine Oil Sample
	Engine Coolant Sample I
	Engine Coolant Sample II
	Hydraulic Oil Sample
	Right Final Drive Oil Sample
	Left Final Drive Oil Sample
	Swing Drive Oil Sample