Page 15 - Summer 2018 GMC Vintage RVing

For additional technical presentations, papers, manuals, and other information go to gmcmi.comvisibly line up the dowel pin hole over the cam dowel. The zero “0” dot will be positioned straight down (at the 6 o’clock position).A short straight edge can be used to verify the 12 and 6 o’clock dots are correctlyin line, vertically.The chain can be wriggled onto the crank gear as the cam gear seats on the dowel.It is important that the cam does not move as the dowel engages the cam gear.Mount the fuel pump eccentric locating its engagement tooth and torque the cam bolt with Locite Blue to 65 ft. lbs.Next phone call... “The dots don’t look right”.The motor is now set on TDC #6–later rotating the motor over one full turn until the timing slot on the balancer comes back to the timing tab, will position the motor on TDC #1 (the dot on the cam gear will now be at 12 o’clock).Place the oil slinger on the crank snout, flat side forward, install new timing cover gasket with thin smear of RTV both sides. Ready to place the timing cover back on.It is a good thing to replace the front seal in the timing cover.Look at the seated position (depth) of the old seal–a common part (Olds diesel seal isa more high temp seal). Lightly smear its outer metal ring with RTV before seating it. Using a larger almost same diameter socket, drive the new seal “straight” into the same original depth. Lightly smear the seals face perimter seam with RTV.On the bottom edge of the timing cover, use a new rubber seal with RTV between it and the metal grove it sits in. Thinly smear RTV on the visible front edges of thepan gasket.GMC Passenger Side Dash RenovationRay & Lisa Erspamer | 1978 Royale | Wauwatosa, WisconsinLisa and I renovated the interior of our 1978 GMC Royale in 2009. Ever since then we have been trying to figure out what to do with the passenger side dash which was not very attractive. Lisa hoped for dash A/C vents that could rotate 360 degrees and close 100%.Step OneFind a nice piece of 1/4" thick woodgrain plastic that matched the interior of the coach. I searched online and at various stores and had no luck. One day I was going through a Habitat for Humanity Resale shop and found a woodgrain plastic flower planter that was the right size. Cost: $3.Note: After we completed the project we did find a wood grain plastic sheet on Amazon, so itis available.Step TwoFind the right size round vents. We found those on Ebay for roughly $10.00 each. (360° Air Conditioning Vent Deflector Outlet Side Dashboard For 05-13 Suzuki SX4)Step ThreeWe cut the plastic sheet to size and routed the edges half-round, drilled and counter sunk the mounding holes and used a hole-saw for the vent holes. We had to modify the vents by sawing off about 1" of their length, otherwise they would go too deep into the dash.To get the vents to fit into the rectangular existing vent openings, we just took a hole-saw and cut a round hole into the dash for each vent and into the air plenum that is behind the dash panel. Naturally that left air openings between the A/C air plenum and theouter dash, we just sealed up the openings with silicone.The new decorative assembly was then installed with silicone around the new vents and behind the plastic sheet to help secure it, and then the eight black screws were installed to hold it in place. With both the screws and the silicone behind it, it is secured well.Final StepFind a stick-on GMC emblem. Again, Ebay has many of them in many sizes. Stick on the GMC name plate.We normally take on projects like this with a “what have we got to lose” attitude. There is always ways to make things work with a little ingenuity and experimenting.Lisa loves her new rotating and closable vents. Now weare trying to figure out how I can add similar ones to the drivers side.SUMMER 2018GMC MOTORHOMES INTERNATIONAL 15