Procedure to Install an Improved Air Cleaner Group for the Rear Engine on Certain 627H Wheel Tractor-Scrapers{1051}
- Wheel Tractor-Scraper:
- 627H (S/N: LCT1-UP; DBW1-UP)
Introduction
Certain parts have been changed to make the air cleaner group easier to disassemble for machine transport.
Prepare the Machine for Rework
- Move the machine to a hard dry surface. Lower the bowl to the ground.
- Place the transmission in neutral, apply the park brake, shut-off the engine and chalk the wheels.
Parts Required to Perform This Rework
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| Parts Required to Perform This Rework | |||
| Item | Qty | Part Number | Part Name |
| 1 | 2 | 2W-6466 | Clamp |
| 2 | 1 | 397-9529 | Cover As |
| 3 | 1 | 420-4984 | Tube |
| 4 | 1 | 432-2635 | Bracket As |
| 5 | 1 | 432-2636 | Bracket As |
| 6 | 2 | 6V-7744 | Locknut |
| 7 | 4 | 7X-0579 | Hard Washer |
| 8 | 1 | 8N-5991 | Hose |
| 9 | 2 | 8T-4185 | Bolt |
| 10 | 3 | 8T-4195 | Bolt |
| 11 | 1 | 8T-4986 | Hose Clamp |
| 12 | 1 | 8T-4988 |
Hose Clamp |
| 13 | 2 | 8T-4990 | Hose Clamp |
| 14 | 7 | 8T-7934 | Hard Washer |
| 15 | 4 | 7X-7729 | Washer |
Perform the Rework
- Remove one handrail (A), one handrail, (B), and one pipe (C). Retain the components for reassembly.
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| Illustration 1 | g03346838 |
- Remove rain cap (D) from air cleaner body (E). Then remove six bolts and six washers (G) to loosen hood (F) .
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| Illustration 2 | g03346852 |
- Raise hood (F) up and over the top of air cleaner body (E). Retain the components for reassembly.
- Remove heat sensor (K) from cover assembly (L). Remove one bolt (H) and three bolts (J). Remove cover assembly (L) .
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| Illustration 3 | g03347467 |
- Remove clamp and hose assembly from the dust collector at location (M) and retain for reassembly.
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| Illustration 4 | g03347492 |
- Remove clamp (P) and discard. Remove two bolts (N) on the near side of the air cleaner and two bolts on the far side of the air cleaner. Lift the air cleaner out.
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| Illustration 5 | g03347519 |
- Disconnect sensor (T) and remove cable strap (S). Retain the cable strap for reassembly. Remove hose (U) and discard existing hose clamp (R) .
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| Illustration 6 | g03347521 |
View with the air cleaner removed | |
- Remove the bracket. Reuse the existing two bolts, but replace the existing washers with two new washers (14). Then reinstall the bracket.
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| Illustration 7 | g03347252 |
View of the compartment without the air cleaner | |
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| Illustration 8 | g03347266 |
View of the plate that will support the air cleaner cover | |
- The cavity should appear as shown in Illustration 7 and Illustration 9.
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| Illustration 9 | g03347335 |
View of the compartment without the air cleaner | |
- Reinstall hose (U) onto the turbo charger using new clamp (11). Reconnect sensor wiring harness (T) and restrain the wires by reusing cable strap (S) .
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| Illustration 10 | g03347314 |
- Install the air cleaner reusing bolts (N) to secure the air cleaner on both sides. Install hose (U) onto the air cleaner using one new clamp (12) .
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| Illustration 11 | g03347278 |
- Place air cleaner cover as (2) onto the air cleaner. Secure the air cleaner cover on two sides using three bolts (J) and one bolt (H). Install heat sensor (K) .
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| Illustration 12 | g03346954 |
- Connect hose assembly at location (M) to the dust collector.
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| Illustration 13 | g03347317 |
- Install bracket (5) onto the existing plate using two hard washers (14) and two bolts that were retained from the disassembly
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| Illustration 14 | g03346955 |
- Reassemble the hood top using the hardware retained from disassembly
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| Illustration 15 | g03346956 |
Top of the hood | |
- Reinstall handrail (B) using the hardware retained from disassembly.
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| Illustration 16 | g03346958 |
Top of the hood | |
- Reinstall handrail (A) using the hardware retained on disassembly.
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| Illustration 17 | g03346959 |
Top of the hood | |
- Reinstall pipe (C) using the hardware retained from disassembly.
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| Illustration 18 | g03346960 |
- Place one clamp (13) onto one hose (8). Then place the hose on cover assembly (2) and tighten the clamp.
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| Illustration 19 | g03347185 |
- Assemble bracket (4) onto bracket (5) using three bolts (10) and three hard washers (14) .
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| Illustration 20 | g03347188 |
- Install tube (3) into hose (8) using the second hose clamp (13) to secure the tube.
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| Illustration 21 | g03347189 |
- Secure tube (3) to bracket (4) using two clamps (1). Attach clamps (1) to bracket (4) using two locknuts (6) two bolts (9) and four washers (15).
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| Illustration 22 | g03347190 |
- Reinstall the existing rain cap using the clamp that was retained from disassembly.
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| Illustration 23 | g03347222 |
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