STG global TANVAC HDV3000, Руководство оператора

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12
6.3. FW/HW SERIES PUMP
A. Valve Maintenance
1.
Using a 22mm wrench, remove the six
valve caps on manifold of pump.
2.
Examine the valve cap o’ring for cuts or
distortions. Replace if worn.
3. Using a needle nose pliers, remove the
suction and delivery check valve. The valve
assembly usually stays together when
removing. If the valve comes apart, use a
needle nose pliers or a reverse pliers to
remove.
(Fig. A)
4. Inspect the suction and delivery check valve
assembly for general wear and replace if
necessary. The valve assembly consists of
the plastic cage, spring, valve seat, poppet
and o’ring. One Comet valve kit is needed
for a complete valve change of one pump.
(Fig. B)
5.
Insert new valve assemblies by simply
placing the assembly in the valve chamber.
Press down firmly on the top of valve
assembly.
(Fig. C)
6. Replace valve caps by applying LOCTITE
243 to valve cap and torque to 33 ft. lbs.
B. Removing & Replacing Pump Manifold
1. Remove the manifold of the pump by
taking a 6mm allen head wrench and
removing the eight head bolts.
2. With the pump firmly secured, take a
medium sized flat head screwdriver and
apply pressure to the manifold by prying
between the crankcase and the manifold.
Work around from all sides of the manifold
evenly until it comes off of the pistons.
Keep manifold properly aligned with the
crankcase to prevent damage to the seals
and pistons.
(Fig. D)
3.
When replacing the manifold, turn
crankshaft of pump until the top of pistons
are closely aligned. Lubricate pistons and
cylinders and evenly press the manifold
toward crankcase until flush.
(Fig D)
Fig. A Fig. B
Fig. C
Fig. F
Fig. D
Fig. E