banzai510(hainz) Posted September 8, 2015 Report Share Posted September 8, 2015 dont understand the electric fuel pump prime. and mechanical fuel pump on here?????? so you have 2 pumps??????? Quote Link to comment
620owner Posted September 8, 2015 Author Report Share Posted September 8, 2015 Yep I have an electric fuel pump ahead of the mechanical. The truck sat for over twenty years so I installed the electric pump to get the gas from the tank up to the carb and ran it for awhile just to circulate gas and (Sea-breeze) through the lines (fuel and return) to clean them up. I'm not using it now, it's shut off just using the mechanical pump which was replaced with a new pump. I'm going to leave the electric in line for a backup. Quote Link to comment
620owner Posted September 24, 2015 Author Report Share Posted September 24, 2015 Finally got a chance to work on the 620 yesterday. I changed out the master cylinder for the cluch. Replaced the coil with a EI coil. (Bought a new EI coil for 1979 - 620) I took the resistor out too. The coil is getting full battery voltage all the time now. Haven't actually checked it but should have hotter spark now. Next is new belts and hoses. I am going to put the air pump belt back on , my dad had removed it. I guess he thought disabling the air pump would make the engine run better.... Quote Link to comment
620owner Posted September 29, 2015 Author Report Share Posted September 29, 2015 Well I tried to back the Datsun out of the garage for the first time in over twenty (20) years. The left front brake was froze up. I thought I could break it loose but the skid mark on the garage floor proves that I was dead wrong. See the photo. I had to pull the drum and clean things up. The drum really wasn't to bad. The brake shoe was frozen to the drum. The shoes had bonded pads and the rear pad has come loose from the shoe and put things in a bind. I will be replacing the shoes with riveted pads. Maybe my forcing things thinking it would break loose didn't help and probably tore it loose. I'm thinking that's probably the case... Anyway the left rear was froze too but it did break loose and the other two rolled free. Ready to roll her outside now. 1 Quote Link to comment
620owner Posted September 29, 2015 Author Report Share Posted September 29, 2015 Light of day again. Can't wait to clean her up. 1 Quote Link to comment
620owner Posted September 29, 2015 Author Report Share Posted September 29, 2015 The truck is solid. Not sure if I'm going to leave the interior original or not yet.... 1 Quote Link to comment
trout104 Posted September 30, 2015 Report Share Posted September 30, 2015 Give it a good clean [try Mr Clean magic eraser on the doors], put on a seat cover and call it good. nice score !!!! 1 Quote Link to comment
620owner Posted September 30, 2015 Author Report Share Posted September 30, 2015 Thanks for the "Magic Eraser" idea, i'llgive it a try. I was looking at bench seat covers for a tempory fix but I'm really toying with the idea of pulling the seat out and having it reupholstered. Does anyone know if somebody makes floor carpeting for the 620's ? Quote Link to comment
banzai510(hainz) Posted September 30, 2015 Report Share Posted September 30, 2015 JC whitney used to sell them 1 Quote Link to comment
rharm78 Posted October 1, 2015 Report Share Posted October 1, 2015 I love that Tonneau cover, was that a dealer option? I have a 73' brochure that says it was available. That is just really cool to see one!! Very clean original truck!!! 1 Quote Link to comment
620owner Posted October 1, 2015 Author Report Share Posted October 1, 2015 Thanks for the like, yes the Tonneau came on the truck new. My dad was the second owner. Dad bought the truck off of the neighbor with 500 miles on it. The neighbor bought the truck thinking he could pull his boat with it. The boat was bigger than the truck so that plan failed. Dad bought the Datsun from the neighbor who then bought a full size 3/4 ton truck. So I am the third owner and the truck has 41,000 miles on it now. Funny story about my dad buying the Datsun. Dad worked in a Steel Mill and in 1977 it was frowned upon to buy anything foreign especially a vehicle. When dad pulled into the employee parking lot the union steel workers surrounded his truck to let him know their displeasure on driving a foreign vehicle onto a US Steel Factory Lot. They finally gave him some slack after awhile only because he was a WWII Vet and over 30 years in the steel mill. Dad really though he was going to have to sell it. He said he took a lot of crap from some guys for quite awhile but it eventually stopped. So times have certainly changed. 1 Quote Link to comment
620owner Posted October 9, 2015 Author Report Share Posted October 9, 2015 Working on the brakes today. Already had replaced the master cylinder, Yesterday I replaced the left rear wheel cylinder, bled out the lines and got a firm peddle but ..... right front wheel cylinder started leaking. I'd bought all new wheel cylinders but didn't feel like busting open the lines again (and being lazy) I thought I'd be slick and just replace the piston and seal from the new cylinder. Well guess what yep your right, it still leaks. Soo I'm going to do it right now and replace the rubber line and wheel cylinder. So much for cutting corners and trying to do it the (Half-ass) easy way. Found some Dorman cylinders instead of the Nabco original type and picked up new brake shoes so I'm going to change out both fronts now. Just one more day wrenching ... Quote Link to comment
banzai510(hainz) Posted October 10, 2015 Report Share Posted October 10, 2015 Nabco are the ones to get Dorman is tiaiwan or Mexican Nabco or Tokico is what you want NEW if possible. if rebuilt then all the same.(don't last to long) wheel cylinders some I notice didn't come with bleed scews or the Y fittings from Rockauto. so ck out before you get if possible 1 Quote Link to comment
620owner Posted October 14, 2015 Author Report Share Posted October 14, 2015 This is what I bought: Wheel Cylinder Front Right Dorman W37381 (Made in Italy) Wheel Cylinder Front Left Dorman W37382 (Made in Italy) Different part numbers for Left & Right...... When I look at them side by side I cannot see any physical difference. Maybe someone can explain what I can't see ??? Quote Link to comment
banzai510(hainz) Posted October 14, 2015 Report Share Posted October 14, 2015 Different part numbers for Left & Right...... When I look at them side by side I cannot see any physical difference. Most like its OK Quote Link to comment
620owner Posted October 15, 2015 Author Report Share Posted October 15, 2015 Everyone loves to do brakes.... right Ok Left front now done new flex hose, wheel cylinder and shoes. Working on the right side. Not as cooperative. Flex line was a bear to break loose. I had to resort to heat and vise-grips....... hate to use vise-grips but the line wrench wouldn't grip anymore so rather than cut off the line and break out the flaring tool I went the vise grip route. The old wheel cylinder was rusted solid into the backing plate. I had to use heat and the big hammer to get it loose and out. Ok popped in new wheel cylinder but when tightening down realized the threaded bolt striped and wouldn't tighten up. Checked the nut and appears to be Ok/ same thread as wheel cylinder bolt but the threads on the wheel cylinder bolt striped right off.... wow never has one do that before. Have to pick up a new cylinder. I was going to re-thread the bolt but have decided just to get another one. Bad deal on that one ! Quote Link to comment
banzai510(hainz) Posted October 15, 2015 Report Share Posted October 15, 2015 I was going to say if not broke dont fix it. as the jap made ones last forever and if not leaky just leave alone Quote Link to comment
620owner Posted October 19, 2015 Author Report Share Posted October 19, 2015 Video of New Flex line & wheel cylinder. Backing plate cleaned and greased, ready for new brake shoes. http://i1016.photobucket.com/albums/af283/rlvega/Mobile%20Uploads/th_VID_20151014_170503566_zpsuhgmntak.mp4 Quote Link to comment
620owner Posted October 19, 2015 Author Report Share Posted October 19, 2015 Video of left front wheel finished brake job. New wheel cylinder, flex line and brake shoes. http://http://i1016.photobucket.com/albums/af283/rlvega/Mobile%20Uploads/th_VID_20151014_173432378_zpsasdlpv9t.mp4 Quote Link to comment
mattyhacks71 Posted November 1, 2015 Report Share Posted November 1, 2015 Nice work and nice truck! It's been parked longer than I've been alive lol Quote Link to comment
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