994K Wheel Loader Service Manual

Service Repair Manual
Models
994K Wheel Loader

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Product: WHEEL LOADER
Model: 994K WHEEL LOADER MM9
Configuration: 994K Wheel Loader MM900001-UP (MACHINE) POWERED BY 3516B Engine
Disassembly and Assembly
994K Wheel Loader Power Train
Media Number -M0071310-03 Publication Date -01/09/2015 Date Updated -01/03/2018
i06799274
Trunnion Support (Oscillating Axle, Front) - Assemble
SMCS - 3268-016-FR
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
FT-2376 Plate 1
FT-2377 Plate 1
6V-0113 Hydraulic Cylinder 1
5P-8712 Bushing 1
1P-0544 Nut 2
5P-8714 Stud 1
4C-9634 Stud 1
5P-8623 Adapter 1
8S-7645 Hose 2
4C-4865 Hydraulic Pump 1
B 4C-9505 Gasket Sealant -
Note: Verify that all the components of the trunnion support are clean and free of foreign material
prior to installation.
Note: Check all the O-ring seals and the components for wear or damage. Replace the components, if
necessary.
Note: Lubricate all the O-ring seals lightly with the lubricant that is being sealed.
1/4994K Wheel Loader MM900001-UP (MACHINE) POWERED BY 3516B Engine(M0...
2020/3/23https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Illustration 1 g06119553

Tooling (A) not shown
End By:
a. Install the trunnion support (oscillating axle, front).

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Mon Mar 23 14:38:05 UTC+0800 2020

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i07473868
Trunnion Support (Oscillating Axle, Rear) - Remove and
Install
SMCS - 3268-010-RE
Removal Procedure
Table 1
Required Tools
A 138-7576 Link Bracket 2
Start By:
a. Remove the oscillating axle.

Installation Procedure
Table 2
Required Tools
B — LOCTITE 5127 -
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in
cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint
may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn
or damaged, use new parts for replacement.
necessary.
1. Install rear trunnion in the reverse order of removal.
a. Install new bolts (7.1), (7.2), and (8.2) that secure trunnion to the housing. Tighten the
bolts to a torque of 875 ± 125 N·m (645 ± 92 lb ft). Turn the bolts an additional 120 ± 5
degrees after the bolts have been torqued.
b. Install new bolts (4.2), (3.2), and (3.1). Tighten using a clockwise or counter clockwise
sequence to a torque of 375 ± 40 N·m (277 ± 30 lb ft). Tighten again in the same
sequence to a torque of 375 ± 40 N·m (277 ± 30 lb ft) and turn an additional 120 degrees
± 10 degrees.

c. Install Tooling (B) to face of the trunnion prior to installing plate (2.3).
d. Tighten bolts (2.2), (1.2), and (1.1) to a torque of 900 ± 100 N·m (664 ± 74 lb ft).
Mon Mar 23 14:39:01 UTC+0800 2020

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i06801761
Trunnion Support (Oscillating Axle, Rear) - Disassemble
SMCS - 3268-015-RE
Disassembly Procedure
Start By:
a. Remove the rear trunnion support.

Mon Mar 23 14:39:57 UTC+0800 2020

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i06801767
Trunnion Support (Oscillating Axle, Rear) - Assemble
SMCS - 3268-016-RE
Assembly Procedure
Table 1
Required Tools
A
FT-2376 Plate 1
FT-2377 Plate 1
6V-0113 Hydraulic Cylinder 1
5P-8712 Bushing 1
1P-0544 Nut 2
5P-8714 Stud 1
4C-9634 Stud 1
5P-8623 Adapter 1
8S-7645 Hose 2
4C-4865 Hydraulic Pump 1
Note: Verify that all the components of the trunnion support are clean and free of foreign material
prior to installation.
necessary.

Tooling (A) not shown
End By:
a. Install the rear trunnion support.

Mon Mar 23 14:40:53 UTC+0800 2020

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i06803724
Differential and Bevel Gear - Remove and Install - Front Axle
SMCS - 3254-010; 3256-010; 3258-010; 3265-010
Removal Procedure
Table 1
Required Tools
A -
Guide Studs
30 − 3.5mm
2
B 138-7574 Link Bracket 2
Start By:
a. Remove the fixed axle.
b. Remove the axle shaft.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This step will help to prevent dirt from entering the internal
mechanism.

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Installation Procedure
1. Install the differential and bevel gear in the reverse order of removal.
a. Tighten bolts to a torque of 875 ± 125 N·m (645 ± 92 lb ft). Then, turn bolts (1) an
additional 120° ± 10°.
Mon Mar 23 14:41:49 UTC+0800 2020

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i06803760
Differential and Bevel Gear - Remove and Install - Rear Axle
SMCS - 3254-010; 3256-010; 3258-010; 3265-010
Removal Procedure
Table 1
Required Tools
A -
Guide Studs
30 − 3.5mm
2
B 138-7574 Link Bracket 2
Start By:
a. Remove the oscillating axle.
b. Remove the axle shaft.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This step will help to prevent dirt from entering the internal
mechanism.

994K Wheel Loader Service Manual

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