Maintenance
1132−1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
1/ 3
Tools: Key to Illustrations:
2 Double pre-tensioning jacks 94114 1 Elastic stud
1 Assembly tool 94114A 2 Main bearing cover
1 Feeler gauge 94122 3 Nut
1 Special feeler gauge 94123 4 Nut
1 Hydr. distributor 94932 5 Piston
1 Connection block 94934 6 Cylinder
3 HP hoses 94935 7 Cover
1 Hydraulic unit 94942 8 Main bearing girder
9 Suspension hole
KO Slot
RS Round bar
1. General
The double pre-tensioning jacks 94114 must always be used for loosening and for
tensioning of elastic studs 1 for the main bearing.
Attention! Thereby device 94111 for removal and fitting of main bearing cover 2
must not be installed (see 1132−2).
Prior to screwing the nuts onto the elastic studs, threads and the nut seating sur-
faces must be clean. Apply oil to the threads. Pay attention to the free movement of
the nuts.
Remark: Pay attention to General Application Instructions 9403−4 for hydraulic
pre-tensioning jacks.
2. Loosening the elastic studs
⇒ Hook assembly tool 94114A into suspension holes 9 of double pre-tensioning
jacks 94114 and place the latter onto elastic studs 1 for the main bearing (Fig.
’C’).
⇒ Connect both double pre-tensioning jacks by HP hoses 94935, connection
block 94934 and hydraulic distributor 94932 with hydraulic unit 94942 (ar-
rangement see Fig. ’C’).
⇒ Screw on nuts 4 of the double pre-tensioning jacks until pistons 5 fully seat on
cylinders 6 (Fig. ’B’).
The pistons are fully down on the cylinders when distance ’L’ is about 23 mm, mea-
sured from the top of the piston to the upper edge of cover 7.
Check the oil level in hydraulic unit 94942.
⇒ Subsequently loosen all nuts 4 by about ¾ to one turn.
⇒ Raise the pressure to 1500 bar (max. 1600 bar) at the hydraulic unit.
⇒ Unscrew nuts 3 by one turn with round bar ’RS’.
⇒ Release pressure to zero at the hydraulic unit and then remove both double
pre-tensioning jacks.
Main Bearing
Loosening and Tensioning of Elastic Studs
2013
CHECK
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