6-56
4. HYDRAULIC OIL WARM UP PROCEDURE
Install temperature reader (see temperature
reader installation procedure in this group).
Run engine at high idle.
Hold a hydraulic function over relief to heat
the oil.
Periodically cycle all hydraulic functions to
distribute warm oil.
Heat oil to test specification (approx. 45˚C).
1)
2)
3)
4)
5)
A
B
Ride control valve
Ride control system (option)
Attention
Before carrying out any maintenance work
the accumulators must be unloaded (zero
pressure).
For this, loosen the nut (A) and bolt (B)
counterclockwise with 10 mm spanner.
The accumulator will be unloaded (zero
pressure) in less than a minute.
The lifting system must firstly be secured
against lowering.
After carrying out maintenance work, screw
the bolt (B) and nut (A).
·
Tightening torque
A : 2.04 kgf
·
m (14.8 lbf
·
ft)
※
1)
2)
※
3)
4)
7609A6WE28
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...