ZEP 212 CD, Руководство по обслуживанию

Страница: 22 / 32

Pump Maintenance
6
7
2
6
3
1
General
PACKING EXTRACTION KIT P/N Z09-00028
COMPLETE TOOL KIT P/N Z09-00021
Valve Service
1. Remove the plugs holding the valve assemblies.
2. Remove and discard o-rings from the plugs. Clean plugs with
solvent or soap and water. Allow to dry.
3. Using needle nose pliers, fingers, or hook shaped tool,
remove the valve assemblies from the head. Remove and
discard the o-rings from the valve assemblies and/or head.
Examine each valve assembly and discard damaged parts.
Refer to the PUMP BREAKDOWN for part numbers of any
replacement items.
4. Clean any accumulated debris from the valve cavities and
flush with water.
5. Wash the valve assemblies in clean water and rinse. While
still wet, test each valve assembly by sucking on the valve
seat. A properly sealing valve will allow a good vacuum to
be developed and maintained, while a malfunctioning valve
will not. Good valve assemblies should be set aside for
installation in step 7.
6. Malfunctioning valve assemblies must be replaced.
7. Lubricate a new o-ring with the pump crankcase oil and install
into valve cavity in the head. Install a good valve assembly
into the cavity as illustrated.
8. Lubricate a new o-ring with pump crankcase oil and place on
a plug cleaned in step 2 above.
9. Install a plug into the pump head. Tighten plug by hand.
10. Torque the plug to the value indicated in the TORQUE section
of the pump specifications.
11. Repeat steps 7 through 11 for remaining valve assemblies.
Head Removal
1. Remove the cap screws holding the pump head to the
crankcase. A metric tool is required for this step. Be careful
not to lose the washer on each cap screw.
2. Remove the head by rotating the crankshaft and tapping
the head away from the crankcase with a soft mallet. Keep
rear surface of the head parallel to the front surface of the
crankcase to prevent binding on the plungers.
3. Once the head is removed, protect the plungers from damage.
Plunger Service
1. Remove pump head per HEAD REMOVAL.
2. Remove any packings and retainers left on the plungers by
pulling them straight off.
Pump Maintenance