PUMP SERVICE
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| Servicing the Plungers |
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| To | reducetherisk | Of serious | bodily injury, | NOTE Plunger repairkit, P/N | |||||
| includingfluid injection, splashinginthe eyes or | replace | ||||||||
| on the skin, orinjury from moving | parts, always | backup rings for threecylinders. | |||||||
| follow the PressureRelief ProcedureWarning |
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| beforeproceeding.WARN'NG |
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II1I 1. Loosentheplungerretainingscrew five to sixtums, | ||||||||||
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| usingan M10 wrench. Push theplunger towards the | ||||
NOTE: | The following metricwrenchesareneeded: | crankcase to separatetheplunger and retaining | ||||||||
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| M10,M13 a n i M30ReDair. | kits are available. | screw. |
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| Refer to the individual repair sectionsand the | 2.Removethescrewfromtheplunger | and examine | ||||||
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| pump partspagefor moredetails. Forthe best | ||||||||
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| the | ||||||||
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| results, useall parts in the kits. | ||||||||
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| washer. Replacethese parts,ifnecessary,usingkit | ||||||||
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NOTE Thereare two different tool kits to aidin |
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| servicing the pump. P/N | 3.Removethe | plunger and flinger from theplunger | ||||||
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| easeinstallation of packings.P/N | shaftClean,examineand. | replace partsas | ||||||
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| includesthe | necessary. |
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| in the removalof packing retainers. | 4. Inspecttheplunger shaftfor oil leakage fromthe | |||||||
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Valves |
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| crankcase.Ifleaking | is obvious,replacethe oil | |||||
NOTE | For a set of six valves, order P/N 801 | seals. Otherwise,DO NOT remove these seals as | ||||||||
they cannotbe reused.An oil seal kit is availableto | ||||||||||
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1. | Remove the hex .plug- from the manifold using an | replace the seals. |
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| M30 wrench. |
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| 5. Lightly grease the oil seal, if it is being replaced, | |||||
2. | Examine the | and the flinger and replace them on the plunger | ||||||||
shaft. Theninstallthe plunger. |
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| it if | itis cut or distorted. |
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3. | Remove the valve assembly from the cavity; the | 6. Lightly grease the retaining screwandthe outer end | ||||||||
of the plunger. Place the washer, | ||||||||||
| assembly maycome apart. |
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| ring around the screwand installthe | screw through | ||||||
4. lnslallthe newvalve. Installthe | the plunger. Torqueto 14.4 | |||||||||
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| torque to 75 |
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| NOTE: If vou plan to replacethePackinas. refer to | ||||
NOTE Retorque theplug after 5 hours of operation. | Sitvicing the |
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Pumping Section |
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| 7. Lubricatetheoutside of each plunger. Slide the | ||||||
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| manifold onto the crankcase, being careful not to | |||||||
1. Remove the eight capscrews and lockwashers from | ||||||||||
damage the seals. |
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| the manifold using an M13 wrench. |
| 8. Installthecapscrews | and | ||||||
2. | Carefully separatethemanifoldfrom the crankcase. | |||||||||
Torque the | screwsto 21.7 | |||||||||
NOTE: | Itmay be necessaryto tap themanifoldlightly | tighteningpattem (Figure4).Uneven | tightening | |||||||
may cause the manifoldto bind or jam. | ||||||||||
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| with a soft mallei to loosen. |
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| Keep the manifold properly aligned withthe | I |
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| ceramicplungers | whenremoving | to avoid |
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| damage to the plungeror seals. |
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3.Carefully examine each plunger for any scoring or cracking and replaceas necessary.
Figure 4
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