282
Hydraulic System
Figure 5
-
25 Return hose and bulkhead fitting
Replacing Filter Elements
I
MPORTANT
:
To protect new components of the hydraulic system, the return filter element must be changed after
the
first
50 hours of truck operation. Change the element twice a year afterwards (see E
The filter restriction indicator (see Figure 5
26) will indicate, when the engine is running, if the filter
needs to be changed. Replace the filter before the indicator reaches the red zone. This will keep the oil
clean, extend component life and reduce failures.
Figure 5
-
26 Filter restriction indicator
To replace the hydraulic filter:
1.
Lock out and tag out the vehicle (see
Locking Out and Tagging Out the Vehicle
2.
Prepare a pan or a bucket to collect the oil that will come out of the filter housing (two gallons of
oil).
3.
Remove the filter head cover bolts (four) [see Figure 5
27].
This in-tank return filter system contains a check valve that closes when the cartridge is removed,
thus preventing the whole tank from draining.
Summary of Contents for EXPERT
Page 1: ...EXPERT TM MAINTENANCE MANUAL...
Page 2: ......
Page 3: ...EXPERT MAINTENANCE MANUAL...
Page 10: ...viii Table of Contents...
Page 18: ...8 Introduction...
Page 244: ...234 General Maintenance...
Page 251: ...Lubrication 241 Figure 4 11 Glass compartment lubrication chart optional...
Page 252: ...242 Lubrication Figure 4 12 EXPERT lubrication chart...
Page 264: ...254 Lubrication...
Page 320: ...310 Hydraulic System...
Page 357: ...Troubleshooting 349...
Page 358: ...350 Troubleshooting...
Page 386: ...378 Multiplexing...