7.2 Maintenance and adjustment of hydraulic system
7.2.1 Maintenance of gear pump
Fig.7-19 Gear pump
1. Disassembly
Before disassembly the pump, make it clean and put the removed parts on the paper
or cloth. Don’t damage the parts.
(a) Hold the pump in a vice by lightly clamping the flange section.
(b) Remove bolts
○
,11, pump cover ⑤, pump body ① (Fig.7-9).
(c) Remove lining plate ⑥, driving gear ② and driven gear ③.
(d) Remove seal ring ⑦ and ring ⑧ from the front and rear covers.
Caution: If the seal ring needn’t to be replaced, don’t remove it from the front
cover.
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