Hitachi CHROMASTER 5160 Instruction Manual page 142

5.3 Replacement of Pump Seal
<Required articles>
Pump seal (P/N: 891-1213x 2)
Hexagon wrench (P/N: N315005, Size: B4)
Workshop tools (P/N: 810-1353)
Receiving tray
Remover N (P/N: 893-1372)
Wash bottle
Gauze or soft cloth
Ultrasonic cleaner
(1) Disconnect the inlet tube and outlet pipes (1)(2) from the
pump heads using a 1/4 inch double-end wrench of
workshop tools.
Pump head
(2) Loosen the hexagon screws alternately with a hex wrench
and remove them.
(3) Carefully pull out the pump head toward you with both
hands.
NOTE: Take care not to damage the plunger.
Pump head
Spring washer
Hexagon screws
Hex wrench
5 - 5
Outlet pipe (2)
Outlet pipe (1)
Guide
Plunger wash mechanism
Wash mechanism
plunger guide