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PVR15 PUMP REPAIR PROCEDURES

DISASSEMBLY PROCEDURE

NOTE:  Disassembling a pump to change 
components, or for any other reason, may void the 
warranty.  Refer to Policy Statement and Discounts 
Summaries.

1.  Remove the key (22) in the rotor shaft keyway.

2.  A small amount of oil may remain in the pump.  
Remove the four cover bolts (18) and slide the cover 
back far enough on the shaft to break the seal 
between the housing and cover to allow the pump to 
drain.

3.  Remove the cover (2).  Take care to avoid damage 
to the bearing with the end of the shaft when the 
cover is removed.

4.  The port plate (4) may come out with the cover. Do 
not let it drop off the locating pins (23).

5.  Remove the vanes (7) with a long nosed pliers or 
tweezers.  There are two vanes in each slot, 26 vanes 
total.

6.  Remove the rotorshaft (3) from the pump.  Be sure 
that the key (22) has been removed from the keyway 
so that it will not damage the shaft seals when the 
rotorshaft is removed.

7.  Turn the pressure adjustment screw (30) 
counterclockwise to release the tension on the 
governor spring.

8.  Remove the pressure ring (6), ring shoe (11), 
governor spring (9), spring retainer (41) and follower 
spring (10).

9.  If the lip seals (24) are to be removed they should 
be pushed out from the inside of the housing at this 
time.  Care must be taken not to damage the journal 
bearing in the housing while the lip seals are being 
removed.  It is recommended that the lip seals be 
replaced whenever the pump is disassembled for 
maintenance.  The seals cannot be reused once they 
have been removed.

10. The journal bushings (21) in the pumps are 
assembled with a press fit.  If they are to be removed 
at this time, the bushing in the housing should be 
pressed out from the front.  The cover bushing should 
be pulled out using an expanding type puller.  The 
bushings should not be reused once they have been 
removed.

11. It is unlikely that further disassembly will be 
necessary in order to perform routine maintenance on 
the pump.

REASSEMBLY PROCEDURE

1.  Clean and inspect parts to determine which parts 
are worn enough to require replacement.

2.  Assemble the new bushings (21) in the housing 
and cover.  The bushing OD's should be lubricated 
before they are pressed in the bores.  Care must be 
taken to orient the "split" and the "oil groove" in the 
bushing as shown in the illustration below.

3.  After the bushings are in place, check to see that 
the rotor shaft will fit into the bushings and provide a 
smooth turning fit.  If the shaft turns hard, the 
bushings should be removed and the bore checked 
closely for nicks or burrs before pressing in the new 
bushings.

4.  Check all of the replacement parts for nicks or 
burrs and then lubricate them with clean oil before 
reassembly.

5.  Worn port and thrust plates should not be 
reground to clean up the wear surface.  If the plates 
are ground, the assembly clearance will become 
excessive and the seal rings in the thrust plate may 
rupture.  Replace worn port and thrust plates if 
necessary.

6.  Assemble the springs (9, 10) and ring shoe (11), 
pressure ring (6) and rotorshaft (3).

7.  To assure proper vane assembly, place the vanes 
(7) with the beveled edge out against the pressure 
ring.  

8.  Assemble the four seal rings into the cavity in the 
back of the thrust plate.  The soft rubber o-rings (14, 
16) should be assembled first and the hard square 
seal rings (13, 15) should be assembled on top of 
them.  Stretch the larger soft o-ring slightly so it clings 
to the ID at the cavity.  Apply clean oil or STP to the 
back of the thrust plate before it is placed in the 
locating pins in the body to help hold the parts 
together while they are assembled.

9.  Before fitting the cover into the housing, check to 
assure that the bore in the port plate is concentric to 
the bearing bore in the cover.  If the bores are not 
concentric, the port place must be relocated 180° on 

the locating pins

.

Spring Housing

C

L

C

L

Oil Groove Position

Thrust
Screw

Item #21

Bushing Orientation

7

Form No. 265294    Rev. 07/08

Summary of Contents for F Design Series

Page 1: ...mended With belt drives please consult factory To avoid axial and radical end loading of the pump shaft do not couple the pump and motor shafts rigidly Allow freedom at the coupling for the two shafts to ride independently To prevent end loading the space between the pump and motor shaft ends should be 3 4 inch 19 05 mm for PVR15 pumps or as the coupling manufacturer specifies PIPING AND RESERVOIR...

Page 2: ...d be connected in common with the case drain return 5 Rotate pump and motor by hand to insure free rotation 6 Set the machine controls to open the circuit and allow free flow from the pump back to tank or connect the pump outlet line directly to tank Jog the motor on and off several times on two seconds off three seconds until the pump is primed Check pump for proper direction of rotation during t...

Page 3: ......

Page 4: ... 121587 Lip Seal 2 25 Buna N 153111 O Ring 1 25 Viton 162100 O Ring 1 ITEM CODE PART DESCRIPTION QTY N0 NO REQ 38 36 252152 Handwheel 1 39 36 261323 Spring Pin 1 40 004223 Spring Pin 1 41 306194 Spring Retainer 1 42 199262 Washer 1 43 122975 Shim 010 A R 44 15 301737 Handwheel 1 45 15 004262 Spring Pin 1 46 B20 2L 4L 5L 128001 Shim 005 A R 47 B20 2L 4L 5L 128002 Shim 010 A R 48 15B20 250458 Shim 1...

Page 5: ...0 9 11 44 45 30 8 15B15 20B15 3L 15B20 1L 2L 4L 5L 10 42 43 41 9 11 12 40 39 38 55 13 15 5 6 3 4 17 23 2 23 14 16 22 21 18 95 7 93 20 25 19 67 24 21 1 66 See Page 6 for Control Options PVR15 PARTS DRAWING Codes 12 21 22 31 Tandem Mounting 3 81 86 85 82 2 95 83 87 88 94 ...

Page 6: ...al Volume Control Without Integral Valve Code 24 Dual Volume Control With Integral Valve Code 2500 Dual Pressure Volume Control Without Integral Valve Code 25 Dual Pressure Volume Control With Integral Valve Code 8 Rate Control Valve for Dual Pressure Code 9 Rate Control Valve for Dual Volume 60 99 51 69 70 50 58 92 60 99 56 50 69 70 61 92 60 99 56 50 69 70 61 92 60 99 51 57 53 ...

Page 7: ...r disassembly will be necessary in order to perform routine maintenance on the pump REASSEMBLY PROCEDURE 1 Clean and inspect parts to determine which parts are worn enough to require replacement 2 Assemble the new bushings 21 in the housing and cover The bushing OD s should be lubricated before they are pressed in the bores Care must be taken to orient the split and the oil groove in the bushing a...

Page 8: ...aulic fluid into the intake port while slowly rotating the shaft in the direction shown by the rotation arrow 15 The pump is now ready to test Refer to front of this manual for start up procedure PVR15 PUMP REPAIR PROCEDURES Continued 374 9 50 m SeePr el oad Char tBel ow f or4Land 5L SeePr el oad Char tBel ow f or15B20 1Land 2L SeePr el oad Char tBel ow f or15B15 20B15and 3L Continental Hydraulics...

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