Assemble And Install - Yale GDP16-20AF Maintenance Manual

600 YRM 496
2. Loosen alternator and remove fan belt.
3. Remove capscrews for the fan. Remove fan and
pulley from the hub.
4. Remove capscrews that hold fan bracket to engine.
Remove fan bracket.
5. Remove upper and lower timing belt covers. See
Figure 44.
1. UPPER TIMING
BELT COVER
2. LOWER TIMING
BELT COVER
Figure 44. Timing Belt Covers
6. Loosen capscrews for timing belt tensioner and re-
move spring. Remove capscrews and timing belt
tensioner.
CAUTION
Do not rotate the camshaft gear or the crankshaft
gear while the timing belt is removed. If either of
the gears is moved, it will be necessary to align the
timing marks.
7. Use chalk to mark direction of rotation of timing belt.
See Figure 45. Align timing marks. Then remove
timing belt.
Figure 45. Timing Belt
8. Disconnect hose at water pump.
screws for water pump. Then remove water pump
from cylinder block.
9. Use puller to remove pulley from shaft. See Fig-
ure 46.
10. Use press to remove impeller from shaft and bear-
ing assembly from housing. Remove water seal
from housing.

Assemble and Install

1. Install water seal in housing. Put antifreeze on lip
of the seal. See Figure 46.
2. Use press to install shaft and bearing in pump body.
Make sure shaft turns smoothly.
3. Use a press to install the shaft and bearing in the
pump body. Make sure the shaft turns smoothly.
4. Install water pump with a new gasket. Tighten cap-
screws to 19 to 26 N•m (14 to 19 lbf ft).
5. Clean any oil or grease from pulleys. Install timing
belt so that it goes in same direction as mark made
during removal.
6. Loosen lock bolt and apply spring tension on belt.
Rotate crankshaft pulley clockwise two complete
turns and check timing marks.
If timing marks are correct, tighten lock bolt for ten-
sioner to 20 to 35 N•m (15 to 26 lbf ft). Check move-
ment on tension side of timing belt. If tension is cor-
rect, belt will move 12 to 14 mm (0.47 to 0.55 in.)
with 10 kg (22 lb) of force. See Figure 47.
7. Install lower timing belt cover and gasket. Tighten
capscrews to 7 to 8 N•m (5 to 6 lbf ft). Install upper
timing belt cover and gasket. Tighten capscrews to
8 to 12 N•m (6 to 9 lbf ft). See Figure 44.
8. Install fan assembly as described in the procedure
for Fan Assembly, Assemble and Install.
9. Install coolant hoses.
coolant.
10. Start engine and check cooling system for leaks.
Remove cap-
DO NOT remove the radiator cap from the radiator
when the engine is hot. When the radiator cap is
removed, the pressure is released from the system.
If the system is hot, the steam and boiling coolant
can cause burns. DO NOT remove the cover for the
radiator when the engine is running.
11. After engine has been operated, stop engine. If
coolant is hot, give engine time to cool. Check
coolant level and add coolant if necessary.
Cooling System Repair
Fill cooling system with
WARNING
19