Oilless Reciprocating Air Compressor Pumps
Valve Inspection/ Replacement (Inspect Every 5,000 Hours)
INSPECT VALVE SET | |||
1. | Remove head bolts from cylinder | ||
| head. Head bolts for some models | ||
| are used also as cylinder bolts, which | ||
| penetrates crankcase (See Figure 7). | ||
2. | Remove cylinder head and valve set. | ||
| If it is difficult to remove by hand, | ||
| insert screwdriver between cylinder | ||
| and valve set and remove. | ||
INSPECTION AND MAINTENANCE | |||
1. | Check if exhaust valve (A) sticks to | ||
| seat or is damaged (See Figure 8). | ||
2. | Check if there is breakage, gouge or | ||
| damage to appearance of intake | ||
| valve (B). |
| |
3. | Lift intake valve by 10 mm and | ||
| check if there is peeling and wear | ||
| on coating surface of valve spacer | ||
| (C). |
| |
|
| Lifting intake | |
! CAUTION | |||
valve too much can | |||
cause damage to intake valve. | |||
Figure 7
Check for peeling
or wear (C)
(B)
Figure 6 | 4. Replace with intake valve if valve |
|
plate and valve spacer are worn or wear is over 0.5 mm in depth. If exhaust valve rises upwards, clean seat surface if foreign matter sticks.
(A)
Figure 8
(A)
5.Clean the whole valve set taking care not to damage, seat surface and remove dust.
6.If viton seals (upper and lower) reach inspection time, replace them. Even if its not time to inspect, be sure to replace if they do not protrude from groove for seal or seal has hardened or been damaged.
7.Be sure to replace plastic seat in cylinder.
8.Fit valve set while paying attention to black plastic seat of intake valve fitted to cylinder (so that you do not drop seat or insert tip of valve under seat).
9.Fit cylinder cover and tighten fitting bolt with designated torque.
NOTES:
•When using valve set again, replace upper and lower viton seals.
•When replacing valve set, replace with upper and lower viton seals (valve set with packing set). You cannot reuse disassembled valve set.
We are not responsible for any problems caused by reuse of disassembled valve set.
REASSEMBLY
Assemble in reverse order of disassembling. Tighten each section with designated tightening torque (See Chart on page 6).
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