TCM FB-8 Series, Service Manual

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7.2 MAINTENANCE
7.2.1 MAINTENANCE OF PUMP
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Cautions
1. Before disassembling the pump, check for oil leaks from the oil seal, the mating section of
the pump body and cover, and other areas.
2. Remove rust, dust and dirt at the shaft end and the pump body. Failure to do so might
damage the parts or allow them to enter the inside of the pump during disassembly, thus
misleading your diagnosis about the pump.
3. The pump has some symmetrical parts. Before disassembling the pump, mark the parts in
the manner shown in the “disassembly procedure”, to ensure correct reassembly. For this
purpose, use oil paint not to damage the parts.
4. Disassembly is a means of finding out the cause of a trouble. Observe the procedure for
disassembling the pump.
5. Before disassembly, make sure you get new packings, gaskets, and oil seals.
(1) Disassembly
①
Hold the front cover in a vice with the
input shaft side downward.
Notes: 1. The bolts will be loosened during
disassembly. Make sure to hold the
front cover in a vice securely as
shown in Figure 7.18, to prevent the
pump from the vice when a force is
applied on the pump.
2. Mark the rear and front covers and
the drive gear side of the pump body
with oil paint.
②
Turn the four fitting bolts with a torque
wrench in the tightening direction, to check
whether they are properly tightened to 88.3
to 98 N-m {9 to 10 kgf-m} [782 to 867 lbf-
in.].
Fig. 7.18
Fig. 7.19
7. HYDRAULIC SYSTEM