High/Low Pressure Service And Receiver Tank Valves; Idlers & Tensioners - PREVOST H3-41 Maintenance Manual

SECTION 22: HEATING AND AIR CONDITIONING
1.2

HIGH/LOW PRESSURE SERVICE AND RECEIVER TANK VALVES

1-HIGH PRESSURE SERVICE VALVE
No
1
2
3
1.3 IDLERS & TENSIONERS
No
1 Central A/C tensioner lock bolt
Central A/C tensioner idler shaft bolt (M12 shoulder bolt)
2
Central A/C tensioner idler shaft bolt (M12 x 1.75 std bolt)
3 Idler support bolt
4 Idler support bolts
5 Small A/C idler shaft bolt
6 Small A/C / alternator transfer pulley shaft nut
7 Air spring connection fitting nut
8 Air spring mounting screw
6 PA1621 Maintenance Manual All Series | Revised February 2019
2-LOW PRESSURE SERVICE VALVE
SERVICE AND RECEIVER TANK VALVE
DESCRIPTION
High pressure service valve (both positions)
Low pressure service valve (both positions)
Receiver tank valve (both positions)
12238
IDLERS & TENSIONERS
DESCRIPTION
3-RECEIVER TANK VALVE
TORQUE
43 lb-ft (58 Nm)
21 lb-ft (28 Nm)
21 lb-ft (28 Nm)
22382_1
TORQUE
43 lb-ft (58 Nm)
31.5-38.5 lb-ft (43-52 Nm)
59 lb-ft (80 Nm)
21 lb-ft (28 Nm)
43 lb-ft (58 Nm)
135-165 lb-ft (183-224 Nm)
135-165 lb-ft (183-224 Nm)
15-20 lb-ft (20-27 Nm)
15-20 lb-ft (20-27 Nm)