Caterpillar cat 236 b skid steer loader (prefix hen) service repair manual (hen00001 06749)

Service Repair Manual
Models
Caterpillar Cat 236B
SKID STEER LOADER

Shutdown SIS
Previous Screen
Product: SKID STEER LOADER
Model: 236B SKID STEER LOADER HEN
Configuration: 236B 246B 252B 262B SKID STEER LOADER HEN00001-06749 (MACHINE) POWERED BY 3044C Engine
Disassembly and Assembly
C3.4 Engines for Caterpillar Built Machines
Media Number -KENR6941-04 Publication Date -01/03/2012 Date Updated -01/03/2012
i02639276
Flywheel Housing - Remove and Install
SMCS - 1157-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A -
Guide Stud
(M10 x 1.25 by 100 mm)
2
Start By:
A. Remove the flywheel. Refer to Disassembly and Assembly, "Flywheel - Remove".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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.
1/5236B 246B 252B 262B SKID STEER LOADER HEN00001-06749 (MACHINE) PO...
2019/10/23https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Dispose of all fluids according to local regulations and mandates.
1. Support the engine.
Illustration 1 g01335374
Typical example

Typical example
2. Remove two bolts (5) from positions (X) on flywheel housing (2) .
3. Install Tooling (A) to positions (X) on flywheel housing (2) .
4. Attach a suitable lifting device to flywheel housing (2). The weight of the flywheel housing
is approximately 32 kg (71 lb).
5. Remove the remaining bolts (5) .
6. Carefully remove flywheel housing (2) from dowels (3) and from the cylinder block.
Note: If necessary, tap the flywheel housing with a soft faced hammer in order to separate
the flywheel housing from the cylinder block.
7. Remove joint (1) .
8. Remove crankshaft rear seal (4) from flywheel housing (2) .
Installation Procedure
Table 2
Required Tools
A -
Guide Stud
(M10 x 1.25 by100 mm)
2
B 8T-5096 Dial Indicator Group 1

NOTICE
1. Ensure that the mating surfaces of the cylinder block and the flywheel housing are clean and
free from damage.
Typical example
2. Inspect dowels (3) in the cylinder block. If necessary, replace the dowels.

3. Install Tooling (A) to the cylinder block.
4. Install a new joint (1) to the cylinder block.
5. Install a suitable lifting device to flywheel housing (2). The weight of the flywheel housing
is approximately 32 kg (71 lb).
6. Use the lifting device to align flywheel housing (2) with Tooling (A). Install the flywheel
housing to the cylinder block.
7. Install bolts (5) finger tight.
8. Remove Tooling (A). Install the remaining bolts (5) .
9. Tighten bolts (5) to a torque of 35 N·m (26 lb ft).
10. Remove the lifting device.
11. Use Tooling (B) to check the alignment of the flywheel housing with the crankshaft. Refer
to Systems Operation, Testing and Adjusting, "Flywheel Housing - Inspect".
12. Install a new crankshaft rear seal (4). Refer to Disassembly and Assembly, "Crankshaft Rear
Seal - Install".
End By: Install the flywheel. Refer to Disassembly and Assembly, "Flywheel - Install".
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Oct 23 23:06:11 UTC+0800 2019

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Previous Screen
i05016832
Crankshaft Pulley - Remove and Install
SMCS - 1205-010
Removal Procedure
Table 1
Required Tools
A 6V-9120 Socket 1
B
5F-7465 Puller Gp 1
8T-4121 Hard Washer 2
8T-4225 Washer 2
8T-6912 Bolt 2
Start By:
A. Remove the V-belt. Refer to Disassembly and Assembly, "V-belts - Remove and Install".
NOTICE
1. Use a suitable method to prevent the crankshaft from rotating.

Typical example

Typical example
2. Use Tooling (A) in order to loosen nut (3) .
Note: Do not remove the nut at this time.
3. Install Tooling (B) to crankshaft pulley (2) . Use Tooling (B) to loosen the crankshaft
pulley. Remove Tooling (B) .
4. Remove nut (3) and remove crankshaft pulley (2) .
5. If necessary, remove woodruff key (1) from crankshaft (4) .
Table 2
Required Tools
C - Loctite 5900 -
NOTICE

Typical example
1. Ensure that the threads of crankshaft (4) and nut (3) are clean and free from damage. If
necessary, install woodruff key (1) to the crankshaft.
2. Apply a continuous bead of Tooling (C) around the threads of crankshaft (4) at position (X)
approximately 10 mm (0.4 inch) from the shoulder of the crankshaft.
3. Install pulley (2) to crankshaft (4) .
4. Use a suitable method to prevent the crankshaft from rotating.
5. Install nut (3) . Tighten the nut to a torque of 490 N·m (361 lb ft).
End By: Install the V-belt. Refer to Disassembly and Assembly, "V-belts - Remove and Install".

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i02639320
Crankshaft Front Seal - Remove and Install
SMCS - 1160-010
Removal Procedure
Table 1
Required Tools
A 1U-8145 Drill Bit (4.10 mm) 1
B 1U-7600 Slide Hammer Puller 1
Start By:
A. Remove the crankshaft pulley. Refer to Disassembly and Assembly, "Crankshaft Pulley -
Remove and Install".
NOTICE
NOTICE
Ensure that the main lip is used in order to remove the crankshaft
front seal. Do not damage the edge of the housing for the crankshaft
front seal.

Typical example
1. Use Tooling (A) to drill three evenly spaced holes in crankshaft front seal (2) .
2. Use Tooling (B) to carefully remove crankshaft front seal (2). Alternate the position of
Tooling (B) from one hole to another hole. This will allow you to evenly remove the
crankshaft front seal from front housing (1) .
Table 2
Required Tools
C
4C-6376 Seal Installer Stud 1
4C-6377 Washer 1
4C-6378 Seal Installer Sleeve 1
NOTICE

Typical example
1. Ensure that the bore in front housing (1) and the nose of the crankshaft are clean and free
from damage.
2. Lubricate the outside diameter of a new crankshaft front seal (2) with clean engine oil.
3. Position crankshaft front seal (2) in the bore of front housing (1) .
NOTICE
Ensure that the lip of the crankshaft front seal that is spring loaded is
facing toward the inside of the front housing and that it is square with
the bore of the housing for the crankshaft front seal.
4. Use Tooling (C) to install crankshaft front seal (2) into front housing (1) .
5. Remove Tooling (C) and check for correct installation of crankshaft front seal (2) .
6. Apply clean engine oil to the lip of crankshaft front seal (2) .
End By: Install the crankshaft pulley. Refer to Disassembly and Assembly, "Crankshaft Pulley -
Remove and Install".

Shutdown SIS
Previous Screen
i02639280
Front Cover - Remove and Install
SMCS - 1166-010
Removal Procedure
NOTICE

Typical example
1. Remove bolts (4) .
2. Remove plate (2) from front housing (1) .
3. Remove O-ring seal (3) from plate (2) .
NOTICE

Typical example
1. Ensure that the mating surface of front housing (1) and plate (2) are clean and free from
damage.
2. Install a new O-ring seal (3) to plate (2) .
3. Position plate (2) onto front housing (1) .
4. Install bolts (4) and tighten to 18 N·m (13 lb ft).
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Oct 23 23:09:08 UTC+0800 2019

Shutdown SIS
Previous Screen
i02639281
Idler Gear - Remove and Install
SMCS - 1206
Removal Procedure
Table 1
Required Tools
A 9U-6148 Idler Shaft Puller 1
Start By:
A. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove
and Install".
B. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
Mechanism Cover - Remove and Install".
NOTICE
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

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before opening any compartment or disassembling any component
containing fluids.
Dispose of all fluids according to local regulations and mandates.
1. Ensure that number one piston is at the top center position on the compression stroke. Refer
to Systems Operation, Testing and Adjusting, "Finding Top Center Position for No. 1
Piston".
Alignment of timing marks
2. Ensure that timing marks (X) on the gears are aligned. Refer to Illustration 1.
Alternatively, make temporary timing marks on the gears in order to show alignment.
3. Loosen the nuts on all rocker arms. Unscrew the adjusters on all rocker arms until all valves
are fully closed.
Note: Failure to ensure that ALL adjusters are fully unscrewed can result in contact between
the valves and pistons.

Typical example
4. Remove bolt (2), washer (3), and plate (4) .
5. Remove idler gear (5) from shaft (1) .

Extracting the shaft from the cylinder block
6. If necessary, follow Steps 6.a and 6.b in order to remove shaft (1) .
a. Make a temporary mark on the cylinder block in order to show the position of oil hole
(Y) .
b. Use Tooling (A) to extract shaft (1) from the cylinder block.
Table 2
Required Tools
B
9U-7324 Indicator Bracket 1
7H-1942 Dial Indicator 1
3S-3268 Indicator Contact Point 1
7H-1940 Universal Attachment 1
NOTICE

Typical example
1. If necessary, follow Steps 1.a and 1.b in order to install shaft (1) .
a. Align oil hole (Y) on shaft (1) with the temporary mark on the cylinder block.
b. Use a soft faced hammer and a hard wooden drift to install shaft (1) into the cylinder
block.
Note: Install shaft (1) squarely into the cylinder block. Ensure that oil hole (Y) is
aligned with the temporary mark and that the shoulder on the shaft is seated against
the face of the cylinder block.
2. Ensure that plate (4) and idler gear (5) are clean and free from wear or damage. If necessary,
replace any components that are worn or damaged.
3. Ensure that number one piston is at the top center position on the compression stroke. Refer
to Systems Operation, Testing and Adjusting, "Finding Top Center Position for No. 1
Piston".

Caterpillar cat 236 b skid steer loader (prefix hen) service repair manual (hen00001 06749)

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