Dashpot: Adjustments

1. Warm up engine.
2. Check idle speed and adjust, if necessary.
3. Remove cap, filter and separator from DP.

Dashpot Filter:

4. Check DP setting speed.
a. Maintain engine speed at 2,500 rpm with the throttle valve.
b. Plug the vacuum transmitting valve (VTV) hole with your finger.

Checking DP Setting Speed:

c. Release the throttle valve.
d. Check the DP setting speed.

DP Setting Speed: 1,500 rpm
(w/ Cooling Fan OFF)

5. If not as specified, adjust with the DP adjusting screw.

Adjusting Dashpot:

6. Check operation of VTV
a. Set the DP speed in the same procedure as above.
b. Release the plugged hole and check that the engine returns to idle in approx. 1 second. If not as specified, check for sticking plunger. Replace DP, if a problem is found.
7. Reinstall DP separator, filter and cap.