Isuzu NHR 4J Series Workshop Manual page 296

• Mount new timing belt on pulleys in the following steps.
Crankshaft timing pulley
Timing pulley.
Pump pulley
• Set the belt on crankshaft timing pulley and hold with
one hand.
• Stretch and pass the belt round each pulley with the
other hand.
• After passing it round injection pump pulley,
install tensioner while taking care not to slacken the
6C-36-1.tif
belt.
CAUTION
• On completion of belt passing, make sure that the
setting mark on crankshaft timing pulley is set.
• If not set, reset the mark and repeat the belt passing.
• Remove tension adjust, lever mounting bolt, and
loosen the fulcrum bolt to such extent that the lever is
movable.
• Hung a spring balance from the end hole of tension
adjust lever, and with the balance pulled down with 88
6C-36-2.tif
N (9Kg/20 lb)., loosen once the, tensioner mounting
bolt and there retighten it.
• Turn the crankshaft by 45° counterclockwise to shift
belt slackness on the tensioner.
• Again hand the spring balance from the end hole of
tension adjust lever and pull it down with the specified
force. Under this condition, loosen tensioner mounting
bolt to absorb belt slackness and retighten is to
specified torque.
Belt Tension
6C-36-3.tif
Bolt Torque
• Fix the tension adjust lever.
6C-36-4.tif
ENGINE FUEL 6C - 37
!
camshaft
" #
Idle pulley Injection
$ %
tensioner
98 ~ 118 (10 ~ 12/22 ~ 26)
76 (7.8/56)
N (Kg/lb)
N∙m (Kg∙m/lb∙ft)