Sump base won't go on

StarTech

Lawn Royalty
Top Poster Of Month
Joined
Feb 19, 2020
Threads
91
Messages
11,490
That spec on the sump screw has been changed by Briggs to 220 in-lbs (18.3 ft-lbs) due leaking sump covers.

Technical Specifications

Model Series3117
Displacement501
Oil Capacity48 oz (1.4 l)
Valve ConfigurationOHV
Flywheel Torque110 lb/ft (149.0 Nm)
Governor Arm Torque40 lb/in (4.5 Nm)
Carb Mount70 lb/in (8.0 Nm)
Plug Gap0.03 in (0.75 mm)
Intake Valve.003-.005 in (.08-.13 mm)
Exhaust Valve.005-.007 in (.13-.18 mm)
Idle Speed1750
Air Gap.010-.014 in (.25-.36 mm)
Flywheel Puller Part19203
Flywheel Holder Part19433
Connecting Rod Torque150 lb/in (17.0 Nm)
Sump Torque220 lb/in (25.0 Nm)
Head Torque250 lb/in (28.0 Nm)
 

StarTech

Lawn Royalty
Top Poster Of Month
Joined
Feb 19, 2020
Threads
91
Messages
11,490
Or until you need a Helicoil to repair the stripped threads. So far using the new specs I have only stripped one hole's threads. It takes a 5/16-18 x 0.625 Helicoil to repair.
 

slomo

Lawn Pro
Joined
Jul 14, 2019
Threads
78
Messages
5,084
Taryl did a video on this issue. He made sure he lubed the oil seal and did "something" to get the cover to go on the last inch. He said NEVER hammer or use the bolts to lock the cover down. Some good common sense there. There was a trick to it I forgot now. Once he did it the cover fell down proper.

slomo
 

slomo

Lawn Pro
Joined
Jul 14, 2019
Threads
78
Messages
5,084
My friend showed up and we got it on. We opened up the 2 peg holes a little and it went on


Do you know what the torque should be on the sump bolts?
Now you have slop in the cover mating flange. Might be looking at future oil seal issues and so on. There was no need to get semi destructive on it. Too late as you already have it on.

slomo
 

Hammermechanicman

Lawn Addict
Joined
Jan 10, 2020
Threads
65
Messages
3,831
Or until you need a Helicoil to repair the stripped threads. So far using the new specs I have only stripped one hole's threads. It takes a 5/16-18 x 0.625 Helicoil to repair.
My favirite is when AVE tightens a regular wernch and says "click" like a torque wrench.
 

Mower King

Well-Known Member
Joined
Sep 19, 2018
Threads
20
Messages
663
My friend showed up and we got it on. We opened up the 2 peg holes a little and it went on


Do you know what the torque should be on the sump bolts?
You "opened up the 2 peg holes", are you talking about where the dowel pins go? How much did you open them up? The dowel pins aligns the sump cover up with the crank , cam, etc. so it don't move out of alignment and or cause it to leak oil, the bolts only hold it together.
 

ba_50

Well-Known Member
Joined
Jul 9, 2014
Threads
33
Messages
132
Now you have slop in the cover mating flange. Might be looking at future oil seal issues and so on. There was no need to get semi destructive on it. Too late as you already have it on.

slomo
What is the cover mating flange?
 

ba_50

Well-Known Member
Joined
Jul 9, 2014
Threads
33
Messages
132
You "opened up the 2 peg holes", are you talking about where the dowel pins go? How much did you open them up? The dowel pins aligns the sump cover up with the crank , cam, etc. so it don't move out of alignment and or cause it to leak oil, the bolts only hold it together.
Just a small area on the edge so the dowel pins would go in. Should be ok..
 

ba_50

Well-Known Member
Joined
Jul 9, 2014
Threads
33
Messages
132
Motor is back on at 180 inch pounds. Never leaked before so it might be ok
 
Top