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For contact information, visit www.improvedracing.com

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APPLICATIONS 

• 

The FSM-XXX-RKIT is a rebuild kit for Improved Racing’s Flow-Series-
Motorsports (FSM) family of thermostats.

• 

The rebuild kit can be optioned with the original temperature element, 
or a different temperature should the needs of the system change.

SCHEMATIC, PARTS LIST & HARDWARE

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Figure 1 - FSM-XXX-RKIT Contents

Item Qty

Part Number

Description

1

1

HRG-1003

-034 Viton Elastomer O-ring

2

2

HEL-100X

Element (Choose Temperature)

3

4

HSC-1018

M4x0.7x30 Socket Screw

4

1

HSG-1008

Stainless Steel Spring

GENERAL REBUILD KIT INFO

Maximum Operating 

Temperature

302°F (150°C)

Minimum Operating 

Temperature

-22°F (-30°C)

Maximum Operating 

Pressure

300 psi (20.68 bar)

HRG-1003 O-ring Info

AS568 -034 Size, OD = 2.254 inch, ID = 2.114 

inch, W = 0.070 inch, Viton Rubber (75A)

Summary of Contents for FSM -RKIT Series

Page 1: ...NO FSM XXX RKIT MADE IN USA For contact information visit www improvedracing com Copyright 2008 2019 Improved Racing Products LLC All rights reserved Rev 190603 Important Read these instructions in their entirety prior to installation ...

Page 2: ...hange SCHEMATIC PARTS LIST HARDWARE 4 1 2 3 Figure 1 FSM XXX RKIT Contents Item Qty Part Number Description 1 1 HRG 1003 034 Viton Elastomer O ring 2 2 HEL 100X Element Choose Temperature 3 4 HSC 1018 M4x0 7x30 Socket Screw 4 1 HSG 1008 Stainless Steel Spring GENERAL REBUILD KIT INFO Maximum Operating Temperature 302 F 150 C Minimum Operating Temperature 22 F 30 C Maximum Operating Pressure 300 ps...

Page 3: ...tion Temperature Stabilization Temperature HEL 1000 180 F 2 F 82 C 1 C 185 F 2 F 85 C 1 C HEL 1001 160 F 2 F 71 C 1 C 165 F 2 F 74 C 1 C HEL 1002 212 F 2 F 100 C 1 C 215 F 2 F 101 C 1 C HEL 1003 140 F 2 F 60 C 1 C 145 F 2 F 63 C 1 C HEL 1004 200 F 2 F 93 C 1 C 205 F 2 F 96 C 1 C BEFORE YOU BEGIN Tip The Red Numbers in Figure 2 are for disassembly steps Tip The Green Numbers in Figure 2 are for rea...

Page 4: ...ottom half of the thermostat 7 8 Remove the element from the valve and discard the element 8 9 Clean wipe off all parts prior to reassembly REASSEMBLY INSTRUCTIONS 1 Place the bottom half of the thermostat onto the work surface 1 WARNING Ensure that the alignment dots are oriented properly 2 Place the new element into the valve 2 3 Carefully slide the valve and element back into the recess on the ...

Page 5: ...dbyfullyhand tighteningthescrewswith a 3 mm tool 11 Usea3mmdriverandtorquewrenchtotorquethescrewsinacrisscross ing pattern to 25 lb in DO NOT EXCEED THIS TORQUE 11 12 Perform a second pass in the same pattern to validate the torque value on the fasteners 13 Release the clamp The rebuild has been completed 2 4 5 6 7 8 11 6 5 4 3 2 1 3 9 Figure 2 FSM XXX RKIT Disassembly Reassembly Steps ...

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