157
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
1000 Hour or Annual Routine Maintenance
Section 5 – Procedures
5.5-7 Inspect Boom Chains
NOTE
Refer to Section 5.6-2 for chain replacement
procedure.
1.
Inspect the chains annually for the following
items, replace the chains as necessary:
▪
worn, cracked or broken plates
▪
wear of plate and pin head
▪
stiff links or enlarged plate holes
▪
worn or rusted connecting pins
L+ 3%
(MAXIMUM)
Worn
Stiff
Links
Cracked
Broken
Chain Plate Deformations
2.
Measure chain elongation. Measurement should
be MAXIMUM of new chain length plus 3%.
3.
If chain replacement is not necessary; clean the
chain in solvent, and dry using low pressure
compressed air.
4.
Prior to installation, soak the chain in a pan of
SAE 40 engine oil or chain and cable lubricant
for a MINIMUM of 8 hours to ensure correct
lubrication of the pins and links.
5.5-8 Inspect RAS System (Rear Axle
Stabilization) Functionality
Warning
This procedure must be performed by a qualified
service personnel only. Failure to adhere to the
steps outlined below could result in serious injury.
1.
Ensure park brake is engaged, transmission
shifter in neutral, boom fully retracted and above
ground.
2.
Remove the cover form the RAS manifold and set
aside.
221 Green
wire
65 Yellow
wire
Manifold
Cover & hardware
Figure 66
RAS Manifold Location
3.
Unplug all harness connectors from RAS
manifold.
4.
Sit in the driver’s seat and fasten seat belt.
5.
Frame level left and observe the front left wheel
lifting off the ground.
6.
Observe the front left wheel while it is off the
ground for 30 seconds. Ensure that it holds in
position.
7.
Level the frame to the right until front left tire fully
rests on the ground.
8.
Shutdown engine and remove key from ignition
switch.
9.
Plug all harness connectors on RAS manifold as
shown in the figure above.
10.
Install the RAS manifold cover back in place.
11.
Perform boom interlock and RAS system test.
Refer to Section 1.2 of this manual.
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