Caterpillar Cat C18 Industrial Engine (Prefix WRH) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
C18 Industrial Engine

Shutdown SIS
Previous Screen
Product: INDUSTRIAL ENGINE
Model: C18 INDUSTRIAL ENGINE WRH
Configuration: C18 Industrial Engine WRH00001-UP
Disassembly and Assembly
C15 and C18 Industrial Engines
Media Number -RENR8630-07 Publication Date -01/11/2017 Date Updated -15/11/2017
i03203779
Crankshaft Front Seal - Install
SMCS - 1160-012
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
D 5P-1733 Seal Locator 1
E 5P-1737 Bolt 3
F 9S-8858 Nut (Seal Installer) 1
G 6V-6142 Seal Installer 1
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: The crankshaft front seal and the wear sleeve must be replaced at the same time. Once the
crankshaft front seal and the wear sleeve are separated, these components cannot be used again.
Note: Do not use any type of lubricant during the installation of the crankshaft front seal
and the wear sleeve.
1. Before installation of the crankshaft front seal and the wear sleeve, inspect the crankshaft
for scratches. Also, inspect the crankshaft for any distortion on the surface that may lead to
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an out of round condition. Use a polishing cloth in order to remove any imperfections on the
crankshaft.
2. Clean the outside diameter of the crankshaft.
Illustration 1 g01635160
3. Fasten Tooling (D) to the crankshaft with Tooling (E).
Note: Install the crankshaft front seal with the arrow that shows the direction of crankshaft
rotation toward the front of the engine.
4. Position wear sleeve (2) and crankshaft front seal (1) on Tooling (D). Install Tooling (G) on
Tooling (D). Lubricate the face of the washer on Tooling (F). Install Tooling (F) on Tooling
(D).
5. Tighten Tooling (F) until Tooling (G) contacts Tooling (D).
6. Remove Tooling (F) and Tooling (G) from Tooling (D).
7. Remove Tooling (E) and Tooling (D) from the crankshaft.
End By:
a. Install the vibration damper and the pulley. Refer to Disassembly and Assembly, "Vibration
Damper and Pulley - Remove and Install".
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Shutdown SIS
Previous Screen
i04275771
Front Cover - Remove
SMCS - 1166-011
Removal Procedure
NOTICE
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1. Remove button head screws (3).
2. Remove nuts (7) and washers (6) from studs (4).
3. Remove front cover (2) from front housing (1).
4. Remove O-ring seal (5) from studs (4).
5. Remove seal (8) from front cover (2).
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Fri Jun 12 12:30:45 UTC+0800 2020
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Shutdown SIS
Previous Screen
i04275789
Front Cover - Install
SMCS - 1166-012
Table 1
Required Tools
A 155-0695 Thread Lock Compound -
NOTICE
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1. If studs (4) are loose or the threads are damaged, install new studs in front housing (1).
Apply Tooling (A) to the threads of the studs. Install the studs in the front housing. Install O
-ring seal (5) on the studs.
2. Install seal (8) in front cover (2).
3. Install front cover (2) on studs (4). Install washers (6) and nuts (7).
4. Install button head screws (3). Tighten the button head screws to a torque of 21 ± 3 N·m
(15 ± 2 lb ft).
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Shutdown SIS
Previous Screen
i02721549
Gear Group (Front) - Remove
SMCS - 1206-011
Removal Procedure
Table 1
Required Tools
A 1P-0510 Driver Group 1
Start By:
a. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) -
Remove".
b. Remove the air compressor, if necessary. Refer to Disassembly and Assembly, "Air
Compressor - Remove and Install".
c. Remove the water pump, if necessary. Refer to Disassembly and Assembly, "Water Pump -
Remove".
d. Remove the auxiliary water pump, if necessary. Refer to Disassembly and Assembly,
"Auxiliary Water Pump - Remove".
e. Remove the fuel transfer pump, if necessary. Refer to Disassembly and Assembly, "Fuel
Transfer Pump - Remove".
NOTICE
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NOTICE
Do not turn the crankshaft or the camshaft while the camshaft gear is
removed. If the front gear group is not correctly timed during
installation, interference can occur between the pistons and the valves,
resulting in damage to the engine.
Note: Be sure to mark the orientation of each of the gears for installation purposes.
1. Remove bolts (2) and thrust plate (1).
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2. Remove sealing plate (3) and adapter (4).
3. Remove O-ring seal (5) and O-ring seal (6) from sealing plate (3).
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4. Remove bolts (8), plate (9), and adjustable idler gear assembly (7).
5. Use Tooling (A) and remove the sleeve bearing from adjustable idler gear assembly (7).
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6. Remove bolts (11), plate (12), and idler gear assembly (10).
7. Use Tooling (A) and remove the sleeve bearing from idler gear assembly (10).
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8. Remove bolts (14), plate (15), and cluster gear assembly (13).
9. Use Tooling (A) and remove the sleeve bearing from cluster gear assembly (13).
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Note: Stub shaft assembly (16) must be removed in order to remove plate (22). The
backlash for the camshaft gear and the adjustable idler gear assembly will need to be
readjusted at assembly.
10. Remove nuts (17) and remove stub shaft assembly (16).
Note: Stub shaft (18) must be removed in order to remove plate (22).
11. Remove nuts (19) and remove stub shaft (18).
12. Remove bolts (21) and remove stub shaft (20).
13. Remove locking bolts (23) that hold plate (22) to the cylinder block. Remove plate (22).
14. If studs (24) are loose or the threads are damaged, remove the studs from the front plate.
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15. Remove integral seal (25) from the cylinder block.
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Shutdown SIS
Previous Screen
i05884214
Gear Group (Front) - Install
SMCS - 1206-012
Table 1
Required Tools
A 1P-0510 Driver Gp 1
B 8T-2998 Lubricant -
C - Loctite 5900 -
D - Loctite 243 -
NOTICE
NOTICE
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1. Thoroughly clean the gasket material from the cylinder block and both sides of the plate.
2. If studs (24) are loose or the threads are damaged, install new studs (24) in the front plate.
Apply Tooling (D) to the serrations of studs (24). Install studs (24) in the front plate.
3. Install integral seal (25) on the dowel pins on the cylinder block.
Note: Apply Tooling (C) to the bottom of integral seal (25) in order to fill the space at the
cylinder block, the front housing, and the engine oil pan.
4. Install plate (22) on the dowel pins on the cylinder block. Install new locking bolts (23)
(Marked "X") in order to fasten the front plate to the cylinder block. Tighten locking bolts
(23) to a torque of 55 N·m (41 lb ft).
Note: Clean the old sealant from the bolts and apply Tooling (D) to the bolts.
5. Tighten locking bolts (23) again to a torque of 55 N·m (41 lb ft).
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6. Install stub shaft (18). Apply Tooling (D) to the studs and the bolt for stub shaft (18).
Tighten nuts (19) and the bolt to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
7. Install stub shaft assembly (16). Apply Tooling (D) to the studs and the bolt for stub shaft
assembly (16). Do not tighten nuts (17) and the bolt for stub shaft assembly (16) at this
time. Nuts (17) and the bolt for stub shaft assembly (16) will need to be tightened when the
backlash is adjusted.
8. Adjust the backlash between the camshaft gear and the adjustable idler gear assembly. The
backlash should be 0.3556 ± 0.254 mm (0.014± 0.010 inch). Refer to Testing and Adjusting,
"Gear Group (Front) - Time" for the backlash adjustment procedure. Tighten nuts (17) and
the bolt to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
9. Install stub shaft (20). Apply Tooling (D) to bolts (21). Install bolts (21) and tighten in a
numeric sequence 1, 3, 4, 5, 2, 1, 2, 3, 4, 5, 1 to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
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10. Use Tooling (A) to install the sleeve bearing in cluster gear assembly (13).
11. Put cluster gear assembly (13) on the stub shaft. Ensure that Timing Marks (V) are aligned
on the cluster gear assembly and the crankshaft gear.
12. Position plate (15) with the oil groove toward the face of the gear. Apply Tooling (D) to
bolts (14). Install bolts (14). Tighten bolts (14) to a torque of 30 ± 7 N·m (22 ± 5 lb ft).
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13. Use Tooling (A) to install the sleeve in idler gear assembly (10).
14. Put idler gear assembly (10) on the stub shaft. Install plate (12) with the oil groove toward
the gear face. Apply Tooling (D) to bolts (11). Install bolts (11). Tighten bolts (11) to a
torque of 30 ± 7 N·m (22 ± 5 lb ft).
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15. Use Tooling (A) to install the sleeve bearing in adjustable idler gear assembly (7).
Note: Align the oil hole in the bearing with the oil hole in the adjustable idler gear
assembly.
16. Put adjustable idler gear assembly (7) on the stub shaft assembly. Position plate (9) with the
oil groove toward the face of the gear. Apply Tooling (D) to bolts (8). Install bolts (8).
Tighten bolts (8) to a torque of 30 ± 7 N·m (22 ± 5 lb ft).
Note: Check the backlash for the camshaft gear and the adjustable idler gear assembly. The
camshaft gear must be installed and the adjustable idler gear assembly must be removed in
order to perform the backlash adjustment procedure. Refer to Testing and Adjusting, "Gear
Group (Front) - Time".
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17. Install O-ring seal (5) and O-ring seal (6) in sealing plate (3). Lubricate O-ring seal (6) with
a 50/50 mixture of Tooling (B) and clean engine oil.
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18. Install adapter (4). Ensure that the dowel in the adapter engages the hole in the camshaft.
19. Install sealing plate (3) and thrust plate (1). Ensure that the dowel in the adapter engages the
hole in the thrust plate. Apply Tooling (D) to bolts (2). Install bolts (2). Evenly tighten bolts
(2) in order to ensure that sealing plate (3) and O-ring seal (5) are seated against the cylinder
head.
20. Adjust the backlash for the camshaft gear and the adjustable idler gear, if necessary. Refer
to Testing and Adjusting, "Gear Group (Front) - Time".
Note: The camshaft gear must be installed and the adjustable idler gear must be removed in
order to perform the backlash adjustment procedure.
End By:
a. Install the fuel transfer pump, if necessary. Refer to Disassembly and Assembly, "Fuel
Transfer Pump - Install".
b. Install the auxiliary water pump, if necessary. Refer to Disassembly and Assembly,
"Auxiliary Water Pump - Install".
c. Install the water pump, if necessary. Refer to Disassembly and Assembly, "Water Pump -
Install".
d. Install the air compressor, if necessary. Refer to Disassembly and Assembly, "Air
Compressor - Remove and Install".
e. Install the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Install".
Fri Jun 12 12:33:32 UTC+0800 2020
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Shutdown SIS
Previous Screen
i02164241
Housing (Front) - Remove
SMCS - 1151-011
Removal Procedure
Start By:
a. Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - Remove
and Install".
b. Remove the crankshaft front seal. Refer to Disassembly and Assembly, "Crankshaft Front
Seal - Remove".
c. Remove the air compressor, if equipped. Refer to Disassembly and Assembly, "Air
Compressor - Remove".
d. Remove the crankshaft position sensor. Refer to Disassembly and Assembly, "Crankshaft
Position Sensor - Remove and Install".
e. Remove the engine support. Refer to Disassembly and Assembly, "Engine Support (Front) -
Remove and Install".
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
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Dispose of all fluids according to local regulations and mandates.
NOTICE
NOTICE
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1. Remove bolts (1).
2. Remove bolts (2) and bracket (3).
3. Remove nut (4).
Note: It is not necessary to remove fuel transfer pump (6) and the adapter.
5. Remove bolts (7) and strap (8).
6. Remove bolt (10) and nut (9).
8. Remove nuts (11).
9. Remove bolts (14) that fasten the engine oil pan to the front housing.
Note: It is not necessary to remove the engine oil pan from the engine.
10. Remove front housing (13).
11. Remove gasket (15) from the plate and the front housing.
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