25.
Re-fit the gears as shown in the Fig. below. Fit
the cover together with a new gasket. Tighten up
the 4 bolts and rotate the shaft to make sure that
it does not jam. Fit the key in its groove and re-fit
the gear wheel. Fit the spring washer and tighten
up the gear with the nut.
27. Check for wear on pistons, piston rings and gud-
geon pins. Replace if necessary. The piston and
connecting rod must be matchfitted as shown in
fig. A. Make absolutely certain that the groove
ring for the gudgeon pin is fitted in its groove.
The piston rings are fitted with a piston ring rod.
Begin with the oil ring 1 (fig B) in the lowest
groove. Continue with the compression ring 2.
Finally fit the compression ring 3. NOTE! The
marking TOP must face upwards. The other two
rings can be faced as desired.
26.
Remove the bolt 1 for the relief valve and check
that the spring 2 and piston are in good
condition. If there is anything suspicious about
the opening pressure of the relief valve, check
the data for the spring. See under “Technical
Data, Lubricating oil pump”.
Crankshaft
28.
Check the drive gear on the crankshaft for wear
or damage. Remove the drive gear with a puller.
Remove the key and clean the shaft. Check for
wear and grind the shaft if necessary. (See
under “Technical Data”.) Clean the engine block
and all other parts which must be re-fitted.
Clean and re-fit the piston and spring and tighten
up the bolt.
16
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD6A, Volvo Penta MD7A |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 3.5 out of 4)
Marine readers have rated Volvo Penta MD6A MD7A Workshop Manual 3.5 out of 4.0 based on 2 product reviews. good manual just what I needed
Well i haven't read it yet but it's gonna help me out when I do.