Perkins Phaser Series - Page 291

21 COOLING SYSTEM
Coolant pump
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Centrifugal, belt driven
Outside diameter of shaft for pulley . . . . . . . . . . . . . . . . . . . . . . 24,587/24,600 mm (0.9679/0.9685 in)
Inside diameter of bore of pulley . . . . . . . . . . . . . . . . . . . . . . . . 24,628/24,648 mm (0.9696/0.9704 in)
Clearance fit of pulley on shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,03/0,06 mm (0.001/0.002 in)
Diameter of bore of impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,872/15,893 mm (0.6248/0.6257 in)
Outside diameter of shaft for impeller . . . . . . . . . . . . . . . . . . . 15,9055/15,9182 mm (0.6263/0.6267 in)
Interference fit of impeller on shaft . . . . . . . . . . . . . . . . . . . . . . . . . . 0,01/0,04 mm (0.0004/0.0016 in)
Impeller to body clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,69/0,89 mm (0.027/0.035 in)
Diameter of bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62,000 mm (2.440 in)
Diameter of bore for bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62,019/62,000 mm (2.441/24.000 in)
Interference fit of bearing in pump body . . . . . . . . . . . . . . . . . . . . . . 0,01/0,04 mm (0.0004/0.0016 in)
Thermostat
Type:
- Four cylinder engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single, wax element, by-pass blanking
- Six cylinder engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Twin, wax element, by-pass blanking
Nominal temperature
stamped on thermostat
by-pass valve
"Start to open"
temperature
"Fully open"
temperature
Minimum
valve
lift, fully open
82°C
(180°F)
77°/85°C
(170°/185°F)
92°/98°C
(198°/208°F)
9 mm
(0.35 in)
71°C
(160°F)
67°/75°C
(153°/167°F)
85°/88°C
(185°/190°F)
9 mm
(0.35 in)
Fan drive housing
- early engines
Bore of housing for bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41,98/41,99 mm (1.6527/1.6531 in)
Outside diameter of bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41,99/42,00 mm (1.6531/1.6535 in)
Interference fit of bearing in housing . . . . . . . . . . . . . . . . . . . . . . . . 0,00/0,02 mm (0.0000/0.0008 in)
Bore of hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,946/21,958 mm (0.8640/0.8645 in)
Outside diameter of shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,987/22,000 mm (0.8656/0.8661 in)
Interference fit of shaft in hub . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,029/0,054 mm (0.0011/0.0021 in)
Maximum permissible end-float of shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,25 mm (0.010 in)
- latest engines
Bore of housing for bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41,97/41,98 mm (1.6524/1.6527 in)
Outside diameter of bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41,99/42,00 mm (1.6531/1.6535 in)
Interference fit of bearing in housing . . . . . . . . . . . . . . . . . . . . . . . . 0,01/0,03 mm (0.0004/0.0012 in)
Bore of hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,938/21,958 mm (0.8637/0.8645 in)
Outside diameter of shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,987/22,000 mm (0.8656/0.8661 in)
Interference fit of shaft in hub . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,029/0,062 mm (0.0011/0.0024 in)
Maximum permissible end-float of shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,25 mm (0.010 in)
21A.30 Perkins Phaser/1000 Series, April 1995