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EMISSION CONTROL
THERMOSTATIC SWITCH (FITTED TO LATER CARS ONLY)
Refitting
6.
Reverse instructions I to 5, apply sealing compound
to the thread of the switch.
Removing
I
Drain part of the coolant.
2.** Disconnect the vacuum pipes at the switch. **
3.
Slacken the two hose clips.
4.
Remove the switch complete with mounting tube.
5.
Secure the tube in a vice and unscrew the switch.
17.20.31
C. O. LEVELS AT IDLE
- Remove and refit
I.
Attain normal engine running temperature.
2.
Set the idle speed to that quoted on the emission
con trollabel 19.15.01.
3.
Check ignition timing, reset if necessary 86.35.16.
4.
Re-check idle speed .. adjust if necessary.
5.
Insert the gas analyser probe as far as possible into
the exhaust pipe.
6.
Check the C. O. reading (compare with emission
control label).
7a. Adjust mixture if necessary 19.15.01.
b. Check idle speed - adjust if necessary.
8.
Withdraw the analyser probe.
9.
Switch off the ignition.
NOTE: Do not allow the engine to idle for longer than 3
minutes without a 'clear out' burst of 1 ninute at
2000 rev/min.
- Check
Special tools: Approved infra-red gas analyser
17.35.01
RUNNING ON CONTROL VALVE
Refitting
5.
Reverse instructions I to 4.
Removing
I.
Remove the carbon canister 17.15.07.
2.
Disconnect the two electrical leads to the solenoid at
the top of the valve.
3.
Disconnect the vacuum signal pipe.
4.
Remove the securing bolts and lift off the valve
complete with mounting bracket.
(Not fitted to pre 1973 cars)
- Remove and refit
17.40.01
17.20.31
17.40.01
Triumph TR6 Munuul. Part No. 545277 Issue 2
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