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#1
07-04-2009, 01:43 AM
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Setting belt tension ... special tool or feel?
... going to do the accessory belts on my 240D in the next few days and was wondering about setting the tension ... is it OK to do it by feel, or is there any advantage to using a tool? If you do it by feel, is it pretty much common sense as to what the appropriate tightness is?
Right now it has the wrong belt on the A/C compressor and its squealing. Other two belts look OK but I'm replacing them anyway due to unknown vintage.
__________________
1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) 
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#2
07-04-2009, 02:39 AM
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I've never used any special tool. Feel works for me. Tight.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. 99 Mazda Miata 183,xxx miles.
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#3
07-04-2009, 03:44 AM
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I like to have mine set a little bit tighter than the point where they squeal under acceleration. Tight enough to not squeal, loose enough to keep the bearings happy
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#4
07-04-2009, 08:17 AM
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NAPA sells a tension gauge called a Kriket for a reasonaable price. Once I started using a gauge, I was shocked at how inaccurate the various "rule of thumb" methods are.
http://www.napaonline.com/MasterPages/NOLMaster.aspx?PageId=470&LineCode=NBH&PartNumber=KR1&Description=Belt+Tension+Gauge
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#5
07-04-2009, 09:16 AM
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It can be done without the gauge.
The V-belt system provides a good bit of latitude with regard to tension. Over the years, I've come to realize that the tension set by most folks is way too tight. The belts can transmit much more torque with lowered tension settings than one would initially believe. After installing a new set of belts, they'll typically stretch a bit, sometimes to the point of being visibly loose. No hint of slippage on the component. I set them to that there is a good 1/2" of movement when the PS and ALT belts are pressed in the middle. The a/c belt will be less, possibly 1/4", due to the short distance between the two pulleys. Just remember............tighter is NOT better.
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#6
07-04-2009, 12:20 PM
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Quote:
Think of all the crank pulley bolts that could be saved.
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#7
07-04-2009, 05:22 PM
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time to get a garage...
__________________
1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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#8
07-04-2009, 05:48 PM
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Quote:
__________________
1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car)
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#9
07-04-2009, 06:22 PM
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Yea... The whole first floor should be a garage. 2nd floor for the house.
 Guest cottage for the wife."Dark, damp, rabid raccoons..." Thats funny!
__________________
AJ 1985 300D (SOLD) 
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#10
07-04-2009, 07:14 PM
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Quote:
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