Milton Roy MILROYAL D, Инструкция по эксплуатации

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7 Instruction Manual
SECTION 3 - MAINTENANCE INSTRUCTIONS-DRIVE SECTION
3.4 REPLACING SPARE PARTS (Figure 3)
3.4.1 Removal of Gear Cage
1. Remove pump housing assembly from No. 272
motor mounting adapter.
2. Remove No. 290 shaft cover.
3. Remove No. 25 oil drain plug and drain oil from
housing.
Note:
At this point the entire pump body should be
securely held in a comfortable working position,
such as in a large vise.
4. Remove No. 300 coupling from worm shaft.
5. Turn stroke control to 100%. Using journal nut
tool, unscrew No. 100 journal nut (right hand
thread) from housing.
Note:
The journal nut can be removed more easily by
applying a steady force on the wrench rather
than by attempting to hammer the wrench to
break the nut free.
6. Unscrew the journal nut and pull it OFF the
shaft. Bearing No. 112 should come out with
the journal nut.
7. Remove worm shaft from housing.
8. Unscrew and remove crankpin and crankpin
shoulder, No. 160 & 165.
9. Remove No. 210 snap rings and push clevis
pin No. 200 aside to disengage stroke adjusting
screw.
10. Lift gear cage out of housing. The remaining
bearing should come out with the cage.
The cage cannot be removed unless this
bearing is in place in the cage.
11. Remove nut No. 100 and worm gear from the
crank. Take care not to lose the key which pins
worm gear to crank.
12. Bronze bearing No. 72 must be pressed onto
crank if replacement of bearing is required.
3.4.2 Removal of Crosshead (Figures 4 & 5)
1. The above disassembly procedure for removal
of Gear Cage must be accomplished prior to
removal of Crosshead.
2. Unscrew Plunger Adapter Nut No. 235 until the
thread is free of the Crosshead.
3. Pull Crosshead out of its bore from the rear,
taking care not to lose Thrust Washer No. 245
if it remains in Crosshead when Nut No. 235 is
removed.
4. Use a drift pin to remove No. 152 Dowel
Pin joining Crosshead and Connecting Rod
Assembly No. 142.
CONNECTING ROD ASSEMBLY
MAY BE OF TWO PIECE
CONSTRUCTION, HAVING A THREADED SHANK SPHERICAL
BEARING SCREWED INTO CONNECTING ROD. IF SO, DO NOT
CHANGE THE RELATIONSHIP OF CONNECTING ROD AND
SPHERICAL BEARING HOLES BY SCREWING THE BEARING IN
OR OUT. IF THE RELATIONSHIP IS CHANGED, DAMAGE TO
THE PUMP WILL OCCUR WHEN PUT BACK INTO OPERATION.
3.4.3 Assembly & Installation of Crosshead
1. Support Crosshead in a “V” block of soft
material to protect Crosshead outside finish.
Insert No. 142 Connecting Rod Assembly into
Crosshead slot so the dog-leg of the Connecting
Rod points the Spherical Bearing to the open
side of the slot.
2. Push No. 152 Dowel Pin into Crosshead
(slip fit) and tap pin through hole in the
Connecting Rod (force fit). Make sure Dowel
Pin ends are not sticking out either side of
Crosshead and that connecting rod oscillates
freely without binding.
3. Insert assembled Crosshead into Pump
Housing, gently working it forward through
No. 52 Oil Seal.