ZEP 212 CD, Руководство по обслуживанию

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11
Pump Maintenance
groove on the plunger screw. Install the anti-extrusion ring
into the groove next to the o-ring. NOTE: The o-ring should
be nearest the screw head and the anti-extrusion ring nearest
the threads.
4. Apply a drop of thread sealant to the threads of the retainer
screw.
5. Thread the plunger retainer screw into the cross head making
sure the copper flat washer is installed onto the screw.
6. Torque the plunger retainer screw to the value indicated in the
torque section of the pump specifications.
Packing Service
1. Remove the head per PUMP HEAD REMOVAL.
2. Remove any packings and female adapters left on the
plungers by pulling them straight off. Insert proper packing
extractor onto the extractor hammer. Insert packing extractor
and tool through the packings and adapters remaining in the
head. Tighten the hammer and remove the remaining items
in the head. Remove packings and o-rings from adapters.
Discard the o-rings and packings.
3. Clean the packing canities in the head and rinse with clean
water.
4. Clean exposed plungers. Clean male and female adapters
with soap and water and allow it to dry.
5. Examine male and female adapters, discard worn items. Trial
fit the female adapters into the head checking for binding or
damage. Discard and replace damaged items
6. Lubricate packing cavities in the head and all packings and
adapters with pump crankcase oil.
7. Lay head on the bench with packing cavities up. Install one
male adapter in each cavity with the flat side down.
8. Install one v-packing into each cavity with the lips pointing
down. A packing insertion tool of the appropriate size is
recommended for this operation.
9. Install the re-stop ring with the lips pointing down.
10. Install a front female adapter into each cavity with the flat side
up. Make certain the adapter goes all the way down into the
cavity.
11. Install the low pressure packing with the flat side down.
12. Install the rear female adapter into each cavity with the lips
pointing down.
13. Lubricate o-rings with pump crankcase oil and install one into
the groove of each adapter.
14. Install one adapter and o-ring into each cavity with the flat
side up. Each adapter and o-ring assembly should push into
the head to approximately 1/16 inch of being flush with the
surface of the head. Only hand pressure should be required
to perform this operation. This step is VERY IMPORTANT.
If the rear female adapter does not fit is obtained, proceed