Engine; Removal; Installation - Komatsu 830E Shop Manual

ENGINE

Removal

Refer to instructions in previous sections for
removal instructions for the Power Module, alterna-
tor, and radiator assembly.
The engine weighs approximately 21,200 lbs.
(9616 kg) wet. Be sure lifting devices are capa-
ble of handling the load safely.
1. Disconnect any remaining wiring or hoses
between the engine and subframe.
2. Remove capscrews and lockwashers (5, Fig-
ure 4-7) securing front engine mount to sub-
frame.
3. Attach spreader bar with lifting straps at front
lift hooks and rear lift hooks (6) on engine.
Remove capscrews and lockwashers (2) at
rear engine mount securing engine to cradle
structure (1).
Always use a spreader bar to ensure lift straps
are vertical at each lift hook.
1. Cradle Structure
2. Capscrews and Lockwashers
C4-6
4. Lift engine from subframe and move to clean
work area for further disassembly.
Service
Complete instructions covering the disassembly,
assembly and maintenance of the engine and its
components can be found in the engine manufac-
turer' s service manual.

Installation

1. Align engine to subframe and install front
mounting capscrews and lockwashers (5, Fig-
ure 4-7). Align and install rear engine mount-
ing capscrews and lockwashers (2) through
cradle structure, but do not tighten at this time.
Tighten front mount capscrews to 345 ft. lbs.
(465 N.m) torque.
2. Install alternator on engine following instruc-
tions for "Engine/Alternator Mating".
3. Tighten rear engine mounting capscrews (2) to
345 ft. lbs. (465 N.m) torque after alternator is
installed.
4. Adjust setscrew (3, Figure 4-1) to equalize gap
(5) between cradle structure (1) and subframe
(4) at left and right side. Lock setscrew with
jam nut (2).
FIGURE 4-8. ENGINE MOUNTING
3. Engine Module Subframe
4. Engine
Power Train
5. Capscrews and Lockwashers
6. Engine Lift Points
4/03 C04026