Komatsu 830E-AC Shop Manual page 515

7. Attach fork truck or suitable lifting device to
suspension. Secure
device.
®
The front HYDRAIR
approximately 2225 kg (4900 pounds). Be certain
the lifting device to be used is of sufficient
capacity to handle load.
8. Remove cap screws and washers (1, Figure 2-
3) and nuts and washers (2).
9. Remove cap screws and washers (8), and nuts
and washers (10).
10. Remove cap screws and washers (6), and
spacers (9).
11. Move suspension to a clean work area for dis-
assembly.
Installation
Use the following procedure for preparing mounting
surfaces and mounting hardware.
1. The mounting surface of both the suspension
and the frame must be clean and dry. Use a
cleaning agent that does not leave a film after
evaporation, such as trichlorethylene, tetrachlo-
rethylene, acetone or lacquer thinner.
When using a cleaning agent, follow the manu-
facturer's instructions for use, proper ventilation
and/or use of breathing apparatus.
2. Inspect suspension and frame mounting sur-
faces and spotfaces for flatness. Surface finish
must not exceed 250 (RMS) (medium tool cut).
Surface flatness must be within 0.254 mm
(0.010 in.).
3. Clean and dry all cap screws, nuts and washers
as stated in Step 1, above.
H02026
suspension to lifting
II suspension weighs
Front Suspensions
NOTE: The use of dry threads in this application is
not recommended. Due to the high tightening forces
required to load these cap screws, dry threads may
cause damage to tools.
4. Lubricate cap screw threads, cap screw head
seats, washer face, and nut seats with a rust
preventive compound. Approved sources are:
• AMERICAN ANTI-RUST GREASE #3-X from
Standard Oil Division of American Oil Company.
• RUSTOLENE D grease
Company.
• GULF NORUST #3 from Gulf Oil Company.
• RUST BAN 326 from Humble Oil Company.
• 1973 RUSTPROOF from the Texas Company.
• RUST PREVENTIVE GREASE-CODE 362 from
the Southwest Grease and Oil Company.
NOTE: If none of the rust preventive greases listed
above are available for field assembly, use one of the
following lubricants:
• SAE 30 weight oil.
• 3% Molybdenum - Disulphide Grease
Maximum Cap Screw Usage
High tightening force is required to load front
suspension mounting cap screws. Repeated
tightening operations will cause cap screw mate-
rial to fatigue and break. DO NOT reuse mounting
hardware (cap screws, hardened washers, and
nuts). Use new cap screws, washers and nuts
every time the suspension is mounted on the
truck.
from Sinclair Oil
H2-5