1.With a 30mm wrench, re- move the six (6) plugs
(48)from the valve cas- ing (43). Inspect the o- rings (48A) and replace if necessary.
Remove the complete valve assembly (46A) by threading a 12mm bolt into the spring retainer and pulling straight out.
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44A | 44 | 45 | 48 | 47 | |||||
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2.To disassemble the valve, screw the bolt into the retainer until the valve plate (45) presses the valve seat (44) out of the spring retainer. Examine all parts and replace if neces- sary. If the seat doesn’t come out, use a valve puller to remove.
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36A | 36 | 35 | 35A | 35B | 39 | 40 | 40 | 41 | 37 | ||||||||||
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3.Remove the eight (8) hex nuts (49A) with a 19mm wrench. Tap the back of the manifold (43) with a rubber mallet to dislodge and slide off the studs.
5.If there are signs of
oil leaking through the plunger oil seals, then replacment is neccessary. Dissassemble the gear end and push out the seals from the back of the pump.
4.Remove the seal sleeve (35) from the manifold and/or crankcase. Remove the pressure rings (39&36A),
29E | 29A | 29B | 29D | 29C |
6.Inspect surface of plunger pipe (29B) carefully. Remove any chemical or mineral deposits taking care not to damage the surface of the plunger. If plunger pipe is worn, remove the plunger bolt (29C) , plunger pipe (29B) and spacer (29E). Replace worn parts necessary. Note: Always use a new copper gasket (29) when repairing the plunger assem- bly.
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