Maintenance
2728−1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
1/ 3
Tools: Key to Illustrations:
2 Jacking screws 1 Nut 12 Joint ring
2 Cover 13 Control valve
3 Intermediate ring 14 Connecting pipe
4 Casing 15 O-ring
5 O-ring to casing 16 Piston ring
6 Cylinder cover 17 Solenoid
7 Self-locking nut 18 Nut with lock washer
8 Piston
9 Valve spindle CA Control air pipe
10 Allen screws (from starting air pipe)
11 Compression spring RC Eye bolt
1. General
Should functional difficulties occur with the starting air valves when starting, or
should a starting air pipe near to the connection become noticeably hotter in opera-
tion than on the neighboring cylinders, then the starting air valve must be dis-
mantled and reconditioned at the very next opportunity.
If no such difficulties occur it is recommended to dismantle yearly at random one
starting air valve for a thorough check and to overhaul the other starting air valves
in frequencies determined by such checking.
Periodical venting of the starting air manifold under higher pressure must be
provided as mentioned in the Operating Manual 0320−1. In addition, regular
checks must be carried out to make sure, that nut 18 on solenoid 17 is tight (see
also Maintenance Schedule 0380−1).
2. Removal from the cylinder cover
⇒ Loosen pipe for control air ’CA’.
⇒ Loosen and remove all four nuts 1.
⇒ Loosen and remove Allen screws 10. Screw jacking screws into the threaded
holes in casing 4 and by tightening them jack the complete starting air valve
from the bore in the cylinder cover 6.
⇒ Reinsert both Allen screws 10 for removing the complete valve.
⇒ Suspended by eye bolts ’RC’ lift the valve off the cylinder cover.
D When the removal is carried out with the cylinder cover fitted on the engine,
the vacated opening must be immediately covered by suitable means to pre-
vent the possibility of foreign particles entering the combustion space.
3. Dismantling a starting air valve
D Lift cover 2 with mounted control valve 13 off casing 4. Take care that during
lifting, the cover does not get jammed, whereby connecting pipe 14 risks be-
ing damaged.
⇒ Remove intermediate ring 3 from casing 4.
⇒ For further dismantling clamp the valve on the milled faces below the spindle
head (spanner purchase) in a vice.
Starting Air Valve
Removal, Fitting and Dismantling, Grinding-in and Assembling
2013-02
CHECK
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