Pump Service
Servicing the Seals and V-Packings
Disassembly:
1.Remove the manifold as described.
2.With crankcase side of manifold facing up, unscrew the seal case from the manifold using a special key wrench.
3.Remove
4.Remove snap ring and low pressure seal from the seal case. Seals are generally removed easily without any tools.
5.High Pressure Seal Models: The high pressure seal is generally easily removed from the manifold without any tools. If extremely worn a reverse pliers may be used.
6.
Reassembly:
V--Packing Models:
1.Lubricate high pressure packing area in manifold.
2.Insert male adapter with notches down and “v” side up.
3.Lubricate
4.Next install female adapter with grooved side down.
5.Examine seal case
6.Thread seal case into manifold and tighten with key wrench.
High Pressure Seal Models:
1.Lubricate seal area in manifold.
2.Carefully square seal into position by hand with the metal grooved side up.
3.Examine seal case
4.Next secure high pressure seal into position by threading seal case into manifold. Tighten seal case with key wrench.
Low Pressure Seal--All Models:
1.Examine seal for wear or broken spring and lace if necessary.
2.Install low pressure seal in seal case with garter spring down.
3.Reinstall snap ring. Be certain snap ring is a tight fit. Replace if it can be easily turned.
4.Replace manifold on pump as described and torque per chart.
Servicing Crankcase Section
1.While manifold, plungers and seal retainers are removed, examine crankcase seals for wear.
2.Check oil level and for evidence of water in oil.
3.Rotate crankshaft by hand to feel for smooth bearing movement.
4.Examine crankshaft oil seal externally for drying, cracking or leaking.
5.Consult factory or your local distributor if crankcase service is evidenced.
Torque Chart
Pump Part | Thread | Tool Size | Torque |
|
|
|
|
Plunger | M5 | 11 mm hex | 80 in. lbs. |
Retainer |
|
|
|
Manifold | M8 x 1.25 | 13 mm hex | 125 in. lbs. |
| M10 x 1.25 | 17 mm hex | 217 in. lbs. |
| M10 | 17 mm hex | 217 in. lbs. |
|
|
|
|
Valve | — | 24 mm | 75 ft. lbs. |
Covers |
| 27 mm | 75 ft. lbs. |
|
|
12308532