Rivera Primo Mid-Controls - Manual (Page 5)

COMPONENT ASSEMBLY / BRAKE SIDE
1. Master cylinder rebuild kit (P/N 2037-0001). Lubricate rubber
cup seal & o-ring on piston with DOT 5 BRAKE FLUID.
(Photo 1A)
2. Install large end of spring into the master cylinder (P/N 2034-
0051) bore with nylon pin inserted into small end of spring
followed by rubber cup seal (flat side of rubber cup seal faces
outward). (Photo 1A)
3 Spread a small amount of brake fluid in master cylinder base.
Install aluminum piston with the o-ring end facing outward and
push aluminum piston into the master cylinder bore and install
snap ring. (Photo 1B)
4. Install master cylinder top cover rubber gasket (P/N 2094-
0001) with master cylinder top cover (P/N 2034-0056) using
two(2) each 10-24 x .500” SHCS (P/N 2100-0112) and hand
tighten. (Photo 1C)
1. Install two(2) each 3/8-24 x 2.75” SHCS
(P/N 2100-0045) thru the two counterbored
holes at end of brake mounting plate (P/N
2084-0063) followed by two(2) each spacers
(P/N 2084-0076). (Photo 3 & 4)
2. Now slide master cylinder onto 3/8-24 x 2.75”
SHCS followed by two(2) each washers
(P/N RIV-318). (Photo 4)
1. Press two(2) each bushings (P/N 2084-0048) into each end of brake pedal
ext. spacer (P/N 2084-0066). (Photo 6)
NOTE: TRY INSTALLING WELDED BRAKE LINKAGE INTO BRAKE PEDAL
EXT. SPACER. THIS WILL LET YOU KNOW IF THE BUSHINGS
NEED TO BE REAMED.
1 Install brake pedal ext. into the machined and pocketed side of brake
mounting plate. (Photo 7)
2. Install four(4) each 1/4-20 x 1.00” SHCS (P/N 2100-0113) into counterbored
holes and then slide spacer (P/N 2084-0071) onto 1/4-20 x 1.375” SHCS
(P/N 2100-0042) and torque these to 12 foot pounds. (Photo 7)
Photo 1A
Photo 3 Photo 4
Photo 6
Photo 7
Photo 1B Photo 1C
Rubber Cup
Seal
O-Ring
2094-0001
2034-0051
2100-0112
2034-0056
2084-0076
RIV-318 2100-0045
2084-0063
M/Cylinder Assy
RIV-318
M/Cylinder Assy
2084-0063
2084-0076
2084-0066
2084-0048
2100-0113
2084-0071 2100-0042
2084-0412