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3
SCREW TIGHTENING CALIBRATION
Description
Exploded view
Cover fixing screw
Piston guide rod fixing
screws
Piston fixing screw
Con-rod cap fixing screw
Head fixing screw
Valve cover screw
Lifting bracket fix.screw
Oil drain plug
Outlet duct plug
Reduction gearbox and
cover fixing screw
Crown wheel fixing screw
*
The con-rod cap fixing screws must be tightened
simultaneously, respecting the phases indicated on
page 22.
**
The head fixing screws must be tightened by means
of a torque wrench after lubricating the thread.
***
The valve cover fixing screws must be tightened with
a torque wrench, lubricating the threaded shank,
respecting the order shown in the diagram in Fig. 47.
4
REPAIR TOOLS
Pump repairs can be facilitated by special tools coded as follows:
For assembly phases:
Seal bush extØ 45; HP alternative seal ring Ø 28x45x8.5/5
Seal bush extØ 44; HP alternative seal ring Ø 32x44x6/3.5
Seal bush extØ 48; HP alternative seal ring Ø 36x48x6/3.5
Seal bush extØ 55; HP alternative seal ring Ø 40x55x7.5/4.5
Seal bush extØ 36; LP alternative seal ring Ø 28x36x5.5
Seal bush extØ 40; LP alternative seal ring Ø 32x40x5.5
Seal bush extØ 44; LP alternative seal ring Ø 36x44x5.5
Seal bush extØ 48; LP alternative seal ring Ø 40x48x5.5
Buffer for oil seal of pump shaft / reduction unit pinion
Buffer for piston guide oil seal
Buffer for reduction gearbox cover
For disassembly phases:
Suction / outlet valves
Suction and outlet valve plug
Piston guide oil seal
Tightening
position
torque Nm
9-12-62
10
102-103-39
10
33-27
20
21-57
30*
43-31
120**
45-30
135***
20-59
40
11-53
40
57
40
68
40
71
70
31
Fig. 47
code 27473000
code 27385400
code 27473300
code 27473100
code 27470900
code 26134600
code 27471100
code 27471300
code 27904800
code 27904900
code 27517400
code 26019400
code 27516900
code 26019400
code 27513600
code 26019400
code 27503900
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