12 - 4
Hydrostatic Pump Endcaps
up to machine no. 751011
Dismantling and Assembly
The numerical sequence shown on the illustration is
intended as a guide to dismantling.
For assembly the sequence should be reversed.
Each endcap 8, 9 is secured to its pump by four capscrews
2. Before dismantling, matchmark each endcap to its pump.
Note that 'O' rings 4 and 5 are only fitted to the rear pump
endcap 8. Locating dowels 6 need only be removed if
damaged.
Note that shims 15 should be retained as a set. On
reassembly, use new 'O' rings and bearings.
Torque tighten bolts 2 to 47 - 61 Nm (4.8 - 6.2 kgf m, 35 - 45
lbf ft).
Torque tighten plug 14 to 54 - 135 Nm (40 - 100 lbf ft, 5.5 -
14 kgf m).
Charge Pressure Checking and Adjustment
1 Stop engine. Connect a 0 - 40 bar (0 - 600 lb/in
2
, 0 - 42
kg/cm
2
) pressure gauge into test point X situated
underneath the pump.
2 Start engine and check pressure is as specified in
Technical Data.
3 If the pressure is not as specified, stop the engine.
Unscrew locknut 13 and turn adjuster 12 4 turn at a
time (clockwise to increase pressure) then re-tighten
locknut. Start engine and re-check pressure. Continue
procedure until pressure is correct then remove
pressure gauge.
Section E Hydraulics
9803/8550
Section E
12 - 4
Issue 4*
Pumps
*
S246240
X
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