3. Maintenance and troubleshooting
MERLION PLUS - E500
STD04
Page 24 of 50
-Insert the Valve and O-ring into the Pump Head
- Insert the Valve Cap
Take note of the orientation, threaded hole facing up
- Assemble the the Outlet Valve Cover
- Hand tighten the M10 Bolts
- Torque all the M10 bolt to 37lb.ft using a torque
wrench in a star configuration
-Assembly of Pump Head & Manifold completed
3.4 Torque Specification
Pos.
Description
E500
N.m/lb.ft
1
Head Bolts
50/37
2
Valve Caps
NA
3
Inlet Cap
140/103
4
Outlet Cap
80/60
5
Bearing Flange Bolts
25/19
6
Rear Cover Bolts
11/8
7
Connecting Rod Bolts
30/22
8
Plunger Bolts
15/11
9
Valve Cover Bolts
50/37
NOTE
It is not necessary to open up the pump once you notice the pressure does not build up.
1
st
thing is to check nozzle for wear and tear which will contribute to pressure drop. If
nozzle is verified, still no pressure improvement, next you can check isfor leaking from
the pump.
NOTE
Torque the bolts according to the table provided above. Incorrect of the pump
will damage the pump piston and seal.
