replacing window coil spring

Quick Learner from Arkansas

Jun 10, 2025 2:43 pm

widow stamp info/ MI windows and doors 3500 series 319153608.4 / h-20-48X78 /H-R35-36X66 TAGED ON ALL SIZES OF MY WINDOWS. THIS ONE IS A 30X36 SINGLE HUNG VINYL WINDOW built in 2008 SOLD IN LUMBER YARD. This lumber yard is no longer in business. ps all the different size window have the same info on them. the unit is 1/2 inch wide and short arm and it with screw hole. appears (ss steel)

2 user uploaded images

6 Replies

Quick Learner from Arkansas

Jun 10, 2025 3:00 pm

Lower window removed weighed 13 pounds
All that's needed is the springs

Quick Learner from Arkansas

Jun 10, 2025 4:42 pm

my guess is 740-s190 spring/15-186 coil clip/15-180coil balance shoe/15-240 air pad would work?

Tom from SWISCO

Jun 16, 2025 11:21 am

I'm confident that we can supply this balance assembly to you, but I'm afraid I don't recognize it based on these photos. before I recommend anything, can you show me the front face of the pivot shoe? Identifying the pivot shoe will allow me to tell you everything else you will need for the assembly.

Quick Learner from Arkansas

Jul 15, 2025 5:14 pm

Hope this picture shows you everything you need.

1 user uploaded image

Tom from SWISCO

Jul 16, 2025 3:02 pm

Thanks! That shoe appears to be our 15-180, which is indeed compatible with our Series 190 coil spring, as well as the 15-186 indent clip and 15-182 barrel.