Tennant 1550, Manual

Page: 71 / 628

MAINTENANCE
3--25
1550 Gas/LPG/Diesel MM283 (2--05)
WATER SEPARATOR/FUEL FILTER -- CAT
ENGINES (For machines serial number 001508
and above)
A
B
WATER SEPARATOR/FUEL FILTER -- CAT
ENGINES -- (For machines serial number
001508 and above)
A. Water Separator/Fuel Filter
B. Drain Cock
The water separator/fuel filter filters impurities
from the fuel and separates any water from the
fuel system. It is located on the right side of the
engine compartment. Water can be drained from
the drain cock at the bottom as needed.
Replace the water separator/fuel filter element
every 400 hours of operation.
IN--LINE FUEL FILTER -- PERKINS ENGINES
(For machines serial number 001424 -- 001505)
The in--line fuel filter is located on the end of the
fuel pump, between the fuel pump and the fuel
line leading to the water trap. Replace the fuel
filter every 400 hours of operation.
A
B
IN--LINE FUEL FILTER -- PERKINS ENGINES
(For machines serial number 001424 -- 001505)
A. In--Line Fuel Filter
B. Fuel Pump
FUEL INJECTION PUMP
The fuel injection pump controls the engine
speed. The maximum speed screw is set and
sealed by the manufacturer and must not be
altered in any way unless factory authority is first
obtained. Any adjustments should be carried out
by experienced fuel pump technicians. The
unauthorized removal of any seals on the pump
may void the warranty.
NOTE: Unless proper test equipment and trained
technicians are available, adjustment or
maintenance of the fuel injection pump should not
be attempted.
FUEL INJECTORS
When replacing injectors in the cylinder head, it is
essential that a new, correct-type heat shield
washer be fitted between the nozzle cap and the
cylinder head.
Use care when replacing the fuel injectors to
prevent loosening the injector leak-off nipples.
Be sure to cut a relief in the inside of your socket
for clearance. This will prevent an interference
between the socket and the leak-off nipple.
B
A
C
D
01477
SOCKET RELIEF CLEARANCE
A. Socket
B. Relief
C. Injector
D. Leak-Off Nipple
Tighten injectors evenly to 52 ft lb (70 Nm).