My 1985 740 turbo overheats. I was told the fan clutch is not working properly. Could this be the problem? How difficult is it to change?
Thanks.
Fan clutch
This is very easy. I've done it twice myself, no problems.
First, be certain that fan clutch failure is the reason you have overheating; I'm not going to address general diagnosis of overheating problems here. To do a quick test of the fan clutch, drive the car until the engine is completely warmed up. Next, have an assistant turn off the engine while you watch the fan. If the fan spins a few revolutions (a second or two) after the engine stops turning, the clutch is definitely bad.
The fan itself is bolted to the clutch, which, in turn, is held to the water pump through the alternator pulley by four nuts (10 mm wrench) on studs. I have found that it is not necessary to loosen the alternator belts. Just remove the four nuts, wiggle the fan/clutch assembly out from the shroud, R&R the fan clutch, and reassemble.
The whole thing shouldn't take more than about a half-hour.
Good luck.
First, be certain that fan clutch failure is the reason you have overheating; I'm not going to address general diagnosis of overheating problems here. To do a quick test of the fan clutch, drive the car until the engine is completely warmed up. Next, have an assistant turn off the engine while you watch the fan. If the fan spins a few revolutions (a second or two) after the engine stops turning, the clutch is definitely bad.
The fan itself is bolted to the clutch, which, in turn, is held to the water pump through the alternator pulley by four nuts (10 mm wrench) on studs. I have found that it is not necessary to loosen the alternator belts. Just remove the four nuts, wiggle the fan/clutch assembly out from the shroud, R&R the fan clutch, and reassemble.
The whole thing shouldn't take more than about a half-hour.
Good luck.
Tom Finley
'97 854 T-5
'85 245 GL
'97 854 T-5
'85 245 GL
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