Maintenance
9403−4/A1
Winterthur Gas & Diesel Ltd.
1/ 4
General Instruction
Hydraulic pre-tensioning jacks for:
Variant 1: Variant 2:
Foundation bolt and engine stay 94145 Main bearing 94114
Tie rod 94180
Cylinder cover 94215A
Exhaust valve cage and 94252
bottom connecting rod studs 94315
Piston, piston rod foot 94340
Supply unit (fuel pump unit) 94557
1. General
There are two versions of hydraulic jack preparation:
D Version 1 − the piston 2 is attached directly on to the elastic bolt / elastic stud 5
(see Fig. 1).
D Version 2 − the nut 3 is used to apply tension to the elastic bolt / elastic stud (see
Fig. 2).
1) You must make sure that the threads of elastic bolts and hydraulic jacks are smooth
and clean.
2) You must make sure that you add lubricant to the elastic bolts and hydraulic jacks,
refer to 0352-1.
3) Connect the hydraulic components to the hydraulic jacks, refer to 9403−2.
4) Fully tighten the high pressure (HP) hoses to make sure that the built−in non-return
valves can operate.
WARNING
Injury Hazard: Always put on gloves, a face shield and safety
goggles when you use hydraulic tools. Hydraulic tools can cause
injury.
5) Do a check of the oil in the HP oil pump or hydraulic unit.
D When you must add oil, read the specification of the pump manufacturer.
Note: Use an engine lubricating oil that has a viscosity of SAE 30 to SAE 40. In
unusual conditions, you can also use cylinder lubricating oil.
D For data about the sealing rings on the hydraulic jacks, see 9403−3.
D To install elastic studs, see 0352−2.
Hydraulic Pre-tensioning Jacks
2015
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