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9

12) Check plunger surface (29B).  If plunger pipe is worn out, 

loosen tension screws (29C) with a 15mm socket and 
pull off plunger pipe to the front.  Clean front surface of 
plunger (29B) thoroughly. Apply a small drop of locktite 
to tension screw. Put a 

new

 crush washer (29D) onto 

tension screw.  Put a thin coat of glue (Loctite) on the ring 
(or ceramic plunger side) and tighten screw to 265 in.-lbs. 

(30 NM).

 

29B 

29D 

29C 

13) 

Replace complete seal 

sleeve (35)/seal case (37) 

assembly into crankcase 
(1). Make sure that the 
weep hole points down-
ward. 

Note: To replace 

the oil seals (31), you 
will need to disassemble 
the gear end (see in-
structions below).

Weep Hole

14) Place entire manifold/seal 

sleeve assembly over the 

studs and push firmly until 

seated against the crank-
case. 

15) Tighten hex nuts (49A) in a 

crosswise  pattern  (shown 
above) to 59 ft.-lbs. (80NM)

6

4

2

7

8

1

3

5

REPAIR INSTRUCTIONS

Summary of Contents for LP301A-5100

Page 1: ...Instructions page 7 10 Pump Mounting Selection Guide page 10 Torque Specifications page 10 Troubleshooting Preventative Maintenance Check List Recommended Spare Parts List page 11 Dimensions back page...

Page 2: ...ump dry approximately 10 seconds to drain the water before exposure to freezing temperatures 1 Prior to initial operation add oil to the crankcase so that oil level is between the two lines on the oil...

Page 3: ...Side Shaft Rotation Top of Pulley Towards Fluid End Weight 132 lbs 60 kg Crankshaft Diameter 35 mm LP600 5100 Specifications LP301A 5100 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS RPM GPM 2500 PSI...

Page 4: ...ainless steel valve plugs 48 can seize when being screwed out of the casing To release tension beforehand strike the plugs 1 2 times with a steel hammer on the top before screw ing them out Coat threa...

Page 5: ...301A 5100 3 37 13239 0100 Seal Case LP600 5100 3 37 13240 0100 Seal Case LP301A 5100 3 38 07140 O Ring Seal Case 3 38A 13241 Support Ring for 38 3 LP301A 5100 LP600 5100 Parts List BSP to NPT Adapters...

Page 6: ...00 Pressure Ring 3 40C 05963 Sleeve 3 Valve Kits LP301A 5100 09196 0100 Item Part Description Qty 44A 07150 O Ring 9 44B 06266 Support Ring 3 46A 07064 0100 Valve Seat 6 46B 07063 0100 Valve Plate 6 4...

Page 7: ...A and tension spring 45 3 Take out discharge valve assemblies 46 by pulling them upwards out of the valve casing 43 with a snap ring tongs or any other pull off device Then remove inlet valves in the...

Page 8: ...and support rings 39A 38A on seal case 37 39 39A 37 38A 38 10 Remove leakage seal 36 from the seal sleeve If worn or dam aged replace with new seal 11 Remove the guide ring 40A v sleeves 40 40C and su...

Page 9: ...r ceramic plunger side and tighten screw to 265 in lbs 30 NM 29B 29D 29C 13 Replace complete seal sleeve 35 seal case 37 assembly into crankcase 1 Make sure that the weep hole points down ward Note To...

Page 10: ...ines up with the outer edge of the bearing hole Remove bearing cover 14 together with radial shaft seal 15 and o ring 16 Fit crank shaft 22 through bearing hole on the opposite side Press in outer bea...

Page 11: ...n inlet of pump for restrictions Unloader Check for proper operation Water in crankcase High humidity Reduce oil change interval Worn seals Replace seals Noisy Operation Worn bearings Replace bearings...

Page 12: ...ar parts 3 Use of repair parts other than those manufactured or authorized by Giant 4 Improper use of the product as a component part 5 Changes or modifications made by the customer or third party 6 T...

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