N scale locomotive flummox

Hi,
hope i’m on the the correct forum area for this question.
i am a longtime O-gauge guy, but have some of N and H.O.
(what can i say, i like(love!) IT all !!!
wi***here was a way to include all those scales and
incorporate it into ONE layout !!!, am sure i’m not alone.
sorry to ramble, here’s the question: have an older (mid-
late 1980’s) Model Power RSD-15
(low nose) N-scale loco and it’s sluggish, guessing
a tune up, but can someone tell me how to remove the
body ??!! i have removed the weight, which revealed 2
screws, which i removed, now what ???
i cannot get the chasis to come free.
do i need to do some VERY gentle ‘persuasion’ ???
also, any specific suggestions for lubrication once apart ?
i am used to not as delicate equipment with my O scale,
and it’s also a plus with the larger parts for my
old eyeballs… !!! (i just need longer arms!)
sure can’t ‘see’ how anyone can do Z scale !!! ,… although extremely
cool also…(!)…
o.k., o.k., enough already …!!! [V]
anyway, any help would be completely appreciated…

thanks to all
driver8

The body is held on by 4 lugs on the frame.
you need to spread the sides of the shell slightly and the chassis should drop out.
I remotored one of these.
Maybe this link will help.
http://www.the-gauge.com/showthread.php?t=6517

Thank You for Your time, Ray !

driver8