WÄRTSILÄ RT-flex50-D, Maintenance Manual

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Maintenance
5556−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
7/ 9
4.4 Fitting the regulating rack
⇒
With the pump cover turned towards the bottom, fasten the upper housing
onto a work bench.
⇒
Fit regulating rack 25 according to Fig. ’H’.
Check regulating rack 25 for easy movement.
⇒
Place rod seal ring 38 in both flanges 24.
⇒
Push both flanges onto the regulating rack and screw them up with the upper
housing.
⇒
Fit stop rings 27 and circlips 26.
L
20
21
25
94555
013.680/05
4.5 Fitting the regulating sleeve
⇒
Bring regulating rack 25 to position shown in Fig. ’L’
and place spacer 94555.
⇒
Fit regulating sleeve 21 in the upper housing, the
toothed rim turned to the bottom and the groove of
12 mm width being flush with guide pin 20.
5
40
4.6 Fitting the pump plunger and lower housing
⇒
Fit upper spring carrier 22 and compression spring
19 (Fig. ’G’).
⇒
Nest pump plunger 18 in lower spring carrier 17.
⇒
Lubricate the pump plunger with clean diesel oil
and insert it in pump cylinder 33, taking care that
both drivers at the pump plunger mesh in the lead of
regulating sleeve 21 (Fig. ’G’).
⇒
Place O-ring 40 in upper housing 5 and lubricate it
(Fig. ’L’).
⇒
Tension the lower and the upper housing together
by means of two Allen screws 16. Thereby spring 19
is compressed (Fig. ’F’).
After screwing up both housings with each other, check
regulating rack 25 for easy movement.
M
17
18
008.656/00
CHECK
2010
Fuel Pump: Dismantling and Assembling
CHECK