Engine 165 Posted October 16, 2018 Share Posted October 16, 2018 Hello I just purchased a 1947 type 45 . Runs like a sewing machine . Brakes stick and front end is wobbly when hitting a bump in a turn . I guess my first issue is the lights don't work ... the siren does and the beacon on top turns but doesnt light up no taillight headlights or pump lights is one issue . The guy I bought it from suggested replacing the rubber brake lines to fix the brake sticking issue he replaced the hydrovac and wheel cylinders and master . Also I am very mechanically inclined just not with 6 volt positive. Any help would be appreciated. I'm new to owning old Mack's but love to wrench just looking for some advice I guess . . Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/ Share on other sites More sharing options...
41chevy Posted October 16, 2018 Share Posted October 16, 2018 (edited) The wobble could be simple as misadjusted wheel bearings, worn tie rod ends or a worn drag link to worn king pins, start at the easiest the bearing just because the drums were off to do the brakes and than check the balance for wear. Tie rod ends and drag link end are rebuild-able and I believe may also have some adjustment one the ball and socket . The 6 volt electrics work the same as 12 volts only less voltage more amps. Has the system been converted to negative ground or is it positive ground? Lighting start with basics like fuses, bulbs, grounds, switches and finally the wiring harness. Beacon turns than look to the light contact between the motor shaft and light head. Sometimes the contacts loose their tension so no power to the bulbs when it spins. Just on g.p. I would replace the rubber brake hoses, you only have a single master system and just for peace of mind I would do all the rubber lines. Good luck with you Mack and post up some pics when you can. Paul Edited October 16, 2018 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-407991 Share on other sites More sharing options...
Engine 165 Posted October 20, 2018 Author Share Posted October 20, 2018 -,Tried to figure the lights tonight . Had 6 volts at fuse panel and nothing at switch so I'm confused 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-408173 Share on other sites More sharing options...
609albert Posted October 23, 2018 Share Posted October 23, 2018 sounds like a wiring issue ,might be best to rewire all,my Mack was like a rats nest with wiring added through the years, check all the steel brake lines too ,I had a steel line that rotted away. good luck and post photos 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-408352 Share on other sites More sharing options...
Engine 165 Posted November 7, 2018 Author Share Posted November 7, 2018 How do I add photos from my phone it wont let me Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-409046 Share on other sites More sharing options...
Brian Muller Posted January 3, 2019 Share Posted January 3, 2019 Hey there! I just saw your post. I am near St.Louis and I have a 1946 Type 45 Open Cab. I can probably help. Brian 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-412405 Share on other sites More sharing options...
David Johnson Posted February 22, 2019 Share Posted February 22, 2019 (edited) On 10/22/2018 at 8:41 PM, 609albert said: sounds like a wiring issue ,might be best to rewire all,my Mack was like a rats nest with wiring added through the years, check all the steel brake lines too ,I had a steel line that rotted away. good luck and post photos I would second that. I re-wired my 45 bumper to bumper. I used a Painless Pro harness to start with and reconfigured it to work for my application. I had to switch to 12v negative ground but you can still use it for 6v positive ground. Edited February 22, 2019 by David Johnson Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-416365 Share on other sites More sharing options...
609albert Posted February 25, 2019 Share Posted February 25, 2019 looks nice & neat and safe too Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-416609 Share on other sites More sharing options...
David Johnson Posted February 26, 2019 Share Posted February 26, 2019 22 hours ago, 609albert said: looks nice & neat and safe too Thanks. Way safer than the rats nest of exposed wire and wire nuts that was on it when I got it. Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-416684 Share on other sites More sharing options...
Engine 165 Posted June 18, 2019 Author Share Posted June 18, 2019 Engine 165 is running driving stopping reliably. Still have no headlights but that is coming along . Why cant I upload pictures Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-425568 Share on other sites More sharing options...
Pacifica Pete Posted July 2, 2019 Share Posted July 2, 2019 (edited) On 6/17/2019 at 7:14 PM, Engine 165 said: Engine 165 is running driving stopping reliably. Still have no headlights but that is coming along . Why cant I upload pictures I've never been able to upload from a mobile device, but it works perfectly on a desktop.... maybe that helps. Would love to see your type-45 -Pete Edited July 2, 2019 by Pacifica Pete Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-426634 Share on other sites More sharing options...
Engine 165 Posted July 2, 2019 Author Share Posted July 2, 2019 I will try to get some pics to my laptop from my phone and get them here Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-426653 Share on other sites More sharing options...
Engine 165 Posted April 21, 2020 Author Share Posted April 21, 2020 Engine 165 in the xmas parade last year 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54570-1947-type-45-issues/#findComment-449359 Share on other sites More sharing options...
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