Carrier TRANSICOLD 05G, Операция и обслуживание, Страница: 14 / 23

3-2
2. Install suction valve positioning spring on dowel
pins. Assemble positioning spring springs with spring
ends bearing against cylinder deck. The spring will bow
outward in the middle. (See Figure 3-2)
3. Place suction valve on dowel pins, over the
positioning spring.
4. Place valve plate and new valve plate gasket on
cylinder deck, ensuring that the valve plate is properly
positioned on the four dowel pins.
5. Using a small screwdriver, operate the suction
valves to ensure that the valve tips are not being held by
the valve plate gasket. (See Figure 3-3)
1
2
1. Positioning Spring
2. Suction Valve
Figure 3-2. Installing Suction Valves
Figure 3-3. Checking Suction Valve
6. Install discharge valve and discharge valve stop
with capscrews and lock washers.
7. Install capscrews, cylinder head and new cylinder
head gasket with flat side to valve plate, ensuring that the
gasket and cylinder head are properly positioned on the
valve plate. Torque the capscrews, in a diagonal pattern,
to a value shown in Table 3-1.
3.4 OIL PUMP AND BEARING HEAD
There are three types of oil pumps (Vane, Gear and
Low Profile Gear) driven directly from the end of the
compressor crankshaft.
3.4.1 LOW PROFILE GEAR PUMP
a. Removal
Remove eight capscrews and remove oil pump
bearing head assembly, gasket and thrust washer. (See
Figure 3-4.)
2
1
3
4
Set screw must be removed
for Low Profile Gear Pump.
1. Oil Pump & Bearing Head
2. Thrust Washer
3. Oil Pickup Tube
4. Oil Inlet Port
Figure 3-4. Oil Pump and Bearing Head Assembly
b. Disassembly, & Inspection
If it was determined that the oil pump was not
operating properly, the entire oil pump and bearing head
assembly must be replaced. Replacement parts for the
pump are not available. However, in the event the pump
requires inspection or cleaning, disassembly and
reassembly by referring to Figure 3-5. Clean all parts;
coat all moving parts with compressor oil before
proceeding with reassembly.
1. Capscrews
2. Cover
3. Reversing Assembly
4. Pinion
5. Gear
6. Drive
7. O-Ring
8. Oil Pump & Bearing
9. Set Screw
10. Relief Valve
11. Pin
1
2
3
4
5
6
7
8
9
10
11
Figure 3-5. Low Profile Gear Oil Pump