| Re: [GMCnet] 1st Voyage in my 1973 Canyonlands [message #326765 is a reply to message #326763] |
Tue, 05 December 2017 17:48   |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
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Senior Member |
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Rod,
As one that has broken two of them, you need to look at your rims. Up until the later years, GMC rims were not made for radial tires and they will crack given the chance. Some place on the GMC web there is a discussion of how to find the circle R mark you need to find. If you can't locate 16' steel rims cheap, consider buying alloy.
Also if you get the coach weighed, you may find out the 70 is too high. 73&4 coaches are lighter than later because Gemini used plywood and not particle board for the interior.
Next, you should have a front sway (actually an anti-roll bar to us engineers) already. Be cautious of putting too big a bar in the back as some have found it to make leveling at a campsite problematic.
With my '73, it was not possible to replace the alternator belt without removing both the fan and the A/C belt. So, if you need to do so, buy two and use wire tie or safety wire to secure it behind all that stuff so it is ready when you need it.
Lastly, even with the P30 master cylinder, you still get no brake from the rear set. That is what the "Reaction Bars" (aka floating backplate) set fixes with no other changes.
Glad you are enjoying the coach.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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