Service Repair Manual
Product: COMPACT WHEEL LOADER
Model: 904B COMPACT WHEEL LOADER B4L
Configuration: 904B Compact Wheel Loader B4L00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904B Wheel LoaderPower Train
Media Number -RENR9758-00
Publication Date -01/06/2005
Date Updated -23/06/2005
Piston Pump (Hydrostatic) - Remove
SMCS - 3203-011
A. Remove the seat. Refer to Disassembly and Assembly, "Seat - Remove".
B. Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump - Remove".
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered, oil is cool before
removing any components or lines. Remove the oil filler cap only when
the engine is stopped, and the filler cap is cool enough to touch with
your bare hand.
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the machine. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide", for tools and supplies suitable to collect and contain
fluids in Caterpillar machines.
Dispose of all fluids according to local regulations and mandates.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tube