Showing posts with label SONETT III. Show all posts
Showing posts with label SONETT III. Show all posts

Monday, July 25, 2016

SAAB ALTERNATOR RECONDITIONING

 Let's ALTERNATE!  The photo above shows before and after my reconditioning work.
Though you can't tell unless you look very carefully, it also shows that one alternator
is for a two stroke Saab and one is for a V4, though both have the early cast aluminum fan.
 Now look at the FINS on each fan from the back. Note that the fins angle in opposite directions. While both engines turn the same direction [clockwise as viewed from the front], remember that the V4 fan pulley is on the BALANCE SHAFT, so the alternator turns the opposite direction.  It is also good to remember that an alternator doesn't give a shit which way it turns---it just produces alternating current [AC]. The "juice"
is then fed through a full wave rectifier whose output is direct current [DC], the stuff the car needs.  Cool, huh?
 This photo shows all the gubbins.  Note that I turned the commutator slip rings on the armature [brass color] down smooth on my lathe. The brush pack is on the extreme left. This alternator is a later unit [tho all are 35 amp, 12 volt] that used the stamped steel fan with the fins angled the correct direction for the Ford/Saab V4.  
 Here are three alternators that I just reconditioned. Left--late V4. Center--V4, sort of early, with aluminum fan. Note the arrow on the fan, indicating direction of rotation. The alternator on the right is a VERY early V4, also with a cast aluminum fan. So what is the difference between the one in the center and the one on the right?
The difference is in the electrical connections on the back. The one on the left and the one in the center use the 3-connector plug, plus a heavier B+ wire, plus a ground wire. The alternator on the right uses four separate connections, plus ground. All were used on Saabs, in various years, and all are 35 amp, 12 volt alternators.

I actually reconditioned six of the buggers, this session, but these three show the main differences that you might encounter. The most IMPORTANT thing to remember is that an alternator must have the correct fan. The arrow--either cast into the aluminum fan face, or stamped into several of the fins on a stamped steel fan--must indicate a counter-clockwise rotation for a V4.  A cast aluminum fan for a two cycle Saab will have the cast-in arrow showing a clockwise rotation.    Don't mix 'em up or you'll get to replace a burned-up alternator, and that's no fun...huh?    

Sunday, October 18, 2015

WIPING CLEAN

 SAAB/Lucas wiper motor reconditioning time again--three of 'em at a time. Most of 'em look like the one shown above when I take 'em apart---YUK!  No wonder they don't  work worth a damn.  Well...over 40 years of working wiper blades....
 Here are three of them--reconditioned. One assembled [on the right], two ready to go together.  
 Ahh...that's better. The brush plate inside has been replaced on this one--you can see where the wires to the self-park switch and main connector have been spliced.
Here is one of the motors on my test bed. I can test any style Lucas motor with this unit. The electrical connections are exactly the same as if the motor was mounted in a car.  No guess work here---I run the motors for a while, on both speeds, and test the self-park feature.  Nothing like the right tools for the job--aye?

Sunday, June 7, 2015

SAAB V4 DISTRIBUTOR RECONDITIONING

 Mass production time again! Here are six [of eight] Bosch distributors for Saab V4 cars, completely disassembled, and with a zillion miles worth of grease and crud cleaned off. They are ready to have the bottom of the distributor housing rebushed. The housing "hogs out" at the bottom, with age and a jillion miles of useage. This wear causes the point gap [thus the dwell and the ignition timing] to fluctuate and the engine runs like crap. Note that the second housing from the right already has a steel bushing installed.
 I use a bronze bushing...BUT...first the distributor housing must be reamed to a certain diameter.  It is essential that the distributor be held perfectly square and the tool that I made [which is in the lathe chuck in this picture] does that job. You can see that several distributors have been drilled, thus the pile of aluminum FUZZ on the lathe bed.
 You can see the bronze bushing set in place, just ready to be pressed into the distributor housing.
 Once I get the bushing in place, I have to ream it to the shaft size, plus 0.003". This is a tedious process, but doing the job with a hand reamer makes sure I get the correct fit. Every distributor is a LITTLE DIFFERENT and has different amounts of wear--remember--these suckers are about 50 years old! 
 You can see the five distributor bodies with bronze bushings and the one with the previously installed steel bushing here.  All the shafts have been fitted and they are ready to go back together again. Now the REAL work starts, as the points advance plates must be fitted and adjusted, a vacuum control unit fitted, and then the assembled unit has to go onto the SUN distributor test machine to set the advance curves.  This usually means I get to take the suckers apart 2 or 3 times to adjust the mechanical advance gubbins to get the correct advance curve.  Swearing usually helps. Quite a lot of swearing helps quite a lot more. 
All eight completely reconditioned distributors are shown here. These all have points and a condenser installed. If the customer wants a Pertronix unit, I take out the points and condenser and install the P unit. Then I add a rotor, a cap and a new set of spark plug wires, and the bugger is ready to go into the customer's V4 engine, for another 100,000 miles.  Good stuff!  

Sunday, August 18, 2013

SAAB SONETT III GLASS HATCH LATCH COVER

 These are NOT fiberglass bolt bins, though they ARE fiberglass. Each, except for the dark one in the center right, is the main body of a cover for a glass hatch latch, for a Saab Sonett III.  The dark one is the steel mould for these things that I built about 25 years ago. The ten bodies shown have been popped out of the mould and trimmed, at this point.
 Here is another view of the ten latch bodies [I believe in mass production, y'see...] and the steel mould. Each latch body has 8 plies of 8 ounce fiberglass cloth. The resin matrix is polyester. You know---that stinky boat resin stuff.
 You can see that I have added a flat fiberglass plate on what will be the TOP surface of each cover. I pre-drilled the holes in the plates before bonding them to the main cover bodies.  The rusty colored "thing" at the bottom is an original, factory plastic latch cover. The sun warps the plastic, makes it brittle and most of them found on Sonett III cars these days are complete junk. 
 Three further stages of assembly are shown here. On the left, the cover with plastic filler completely sanded, ready for paint. In the center, a cover in primer, wet sanded and ready for color. On the right a cover painted and ready for installation in a Sonett III.  There is a whole LOT of hand labor making these things look this good. Sand, fill, sand, fill, swear, sand, swear, fill, swear....
Another view of the last three stages. I supply new stainless steel 1/4-20 bolts and stainless washers with these completed latch covers. These critters won't warp or get brittle--they'll probably outlast the rest of the car. Pretty neat, eh?