ChesterChop Posted January 15, 2022 Share Posted January 15, 2022 I have been checking the oil at the bottom of the ball. Someone told me that there's two other places higher up on the rears I should be checking to. Anyone know where? Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/ Share on other sites More sharing options...
Onyx610 Posted January 15, 2022 Share Posted January 15, 2022 Bevel gear compartment and power divider 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487120 Share on other sites More sharing options...
Onyx610 Posted January 15, 2022 Share Posted January 15, 2022 Make sure to change the breather out when you service the rear. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487121 Share on other sites More sharing options...
Onyx610 Posted January 15, 2022 Share Posted January 15, 2022 Start at 3:10 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487122 Share on other sites More sharing options...
ChesterChop Posted January 15, 2022 Author Share Posted January 15, 2022 Thank you. This will help a lot! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487125 Share on other sites More sharing options...
Onyx610 Posted January 15, 2022 Share Posted January 15, 2022 Perfect! Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487126 Share on other sites More sharing options...
Mark T Posted January 15, 2022 Share Posted January 15, 2022 That looks like an aluminum frame in that truck. Be interesting to see some more of that Mack Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487129 Share on other sites More sharing options...
Popular Post ChesterChop Posted January 15, 2022 Author Popular Post Share Posted January 15, 2022 4 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487138 Share on other sites More sharing options...
Mark T Posted January 15, 2022 Share Posted January 15, 2022 😍 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487144 Share on other sites More sharing options...
Popular Post theakerstwo Posted January 15, 2022 Popular Post Share Posted January 15, 2022 To ckeck the grease level use the plug on the rear of the bowl or load housing.The other two plugs are only to fill those compartments after a grease change.The gears throwing oil up will keep the compartments filled. 5 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487145 Share on other sites More sharing options...
ChesterChop Posted January 15, 2022 Author Share Posted January 15, 2022 I started getting a noise out of the front differential. I was told it was rebuilt not too long before I bought the truck. I talked to the guy that owned it before me and he said there were two reservoirs above the check bolt on the sump(?)that I should have been checking. I put around 20,000 miles on it in the last year and checked at the sump a couple times. The oil level was where it should be. Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487146 Share on other sites More sharing options...
63BMack Posted January 15, 2022 Share Posted January 15, 2022 It ought to have a pretty good road speed with 3.65 gears. What are the engine and transmission specs on the truck. Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487147 Share on other sites More sharing options...
Onyx610 Posted January 15, 2022 Share Posted January 15, 2022 Yes!!!! That truck is sick! Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487154 Share on other sites More sharing options...
ChesterChop Posted January 16, 2022 Author Share Posted January 16, 2022 (edited) Thank you. It's a 1987 RW613 with a E9 400 and a Mack 12 speed transmission. I bought it last winter and started running it full time in June. It would bury the speedometer, when it was working lol. It could pull a little harder but has enough get up to keep me smiling. I'm sure there's a lot I could go over on the engine to improve it but right now I'm just trying to keep it earning. I found what I think is a 1984 RWL722 sitting in a field. Same motor. They parked it because of a broken frame.It came with the factory dual stacks and I'm in the process of putting the driver side one on my 87. Edited January 16, 2022 by ChesterChop Grammatical 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487160 Share on other sites More sharing options...
Popular Post Joey Mack Posted January 16, 2022 Popular Post Share Posted January 16, 2022 Glenn is right ... just check the level in the bowl, at the rear plug. the rear end is splash lubed and there are channels cast into the inside of the carrier housing to direct the oil where it needs to go.. jojo 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487162 Share on other sites More sharing options...
ChesterChop Posted January 16, 2022 Author Share Posted January 16, 2022 Thanks. Sounds like I've been checking where I should be. It would really hurt to have a costly repair and down time because of lack of maintenance. Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487164 Share on other sites More sharing options...
JoeH Posted January 16, 2022 Share Posted January 16, 2022 As with all things mechanical, parts can fail. If you have a noise coming from the rear you could have a bearing failing. We had one go about 10 years ago. Ate a few teeth off the ring gear so we dropped a pair of differentials that gave us about 10mph more speed. (Previous top speed was 48mph floored. You could slide into first gear from a stop with no clutch.) 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487196 Share on other sites More sharing options...
Popular Post Mark T Posted January 16, 2022 Popular Post Share Posted January 16, 2022 Judging by that tag on the rear ? It's not a Mack reman , early failure of those isn't uncommon. Those plugs you mentioned up on the power divider and side cover for the bevel gear will need to be filled when you replace the carrier. The power divider.... you'll put a couple squirts in and it'll be running out, but it has to be filled in there. Then the other plug on the side cover and the bottom plug on the housing, all need to be filled. Then if nothing leaks ?? a check in the plug in the housing will be it . 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487202 Share on other sites More sharing options...
Popular Post theakerstwo Posted January 16, 2022 Popular Post Share Posted January 16, 2022 I have seen noise caused by mismatched tires on a mack rears.I always said dont let the tires be more than a 3/4 inche tall from smallest to largest and the peanuts will last for ever.This noise in most cases will be found as a knock at slow speeds. 3 2 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487208 Share on other sites More sharing options...
fjh Posted January 17, 2022 Share Posted January 17, 2022 18 hours ago, theakerstwo said: I have seen noise caused by mismatched tires on a mack rears.I always said dont let the tires be more than a 3/4 inche tall from smallest to largest and the peanuts will last for ever.This noise in most cases will be found as a knock at slow speeds. Also if you have clunks and you have steel bud wheels pull those wheels and look for broken rims! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69066-checking-oil/#findComment-487262 Share on other sites More sharing options...
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