Suburban Sh Series SH42 Parts Diagram · Exploded View › Combustion Chamber

Furnace · 3 assemblies · 3 diagram sheets · 71 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Sh Series SH42 RV furnace: 3 assemblies (Exploded View › Combustion Chamber, Exploded View › Cabinet Assembly, Exploded View › Burner Assembly) and 71 manufacturer part numbers. 10 parts are marked as superseded — the description gives the replacement number to order instead.

The rating plate is on the furnace chassis — slide the unit's front panel off or look just inside the exterior access door. Suburban models (SF-30F, NT-34SP …) changed burners and boards over the years, so the serial number's date range matters as much as the model.

Exploded View › Combustion Chamber

Components

40 items

1. #Screw; For Use With Suburban Furnace Vent NT.12SE/ NT-16SE/ NT-20SE; #10 x 3/4 MFR # 121853 Superseded: see description
2. #VENT CAP MFR # 260231
3. #SUBURBAN VENT/EXHAUST TUB MFR # 260553
4. #SCREW 8-18X1/2 SELF DRILL MFR # 121857
5. #APPLIANCE COMPONENTS RV; Screw 8 X 1/2 Ph Ph MFR # 120615
6. #APPLIANCE COMPONENTS RV; Box Air Int MFR # 51430BK
7. #APPLIANCE COMPONENTS RV; Gskt Hsg Comb Air MFR # 71108
8. #Furnace Combustion Wheel; For Suburban Furnace SH-35/ SH-42/ SH-35F/ SH-42F MFR # 350199
9. #APPLIANCE COMPONENTS RV; Hsg Comb Air MFR # 390862BK
10. #APPLIANCE COMPONENTS RV; BRKT BLWR SPACER MFR # 62949
11. #SCREW,#8-18 X 1/2 SELF DRILLING MFR # 121657
12. #GASKET,FIREWALL COMBUSTION AIR MFR # 71107
13. #APPLIANCE COMPONENTS RV; GSKT MOTOR MFR # 71085
14. #Furnace Motor; For Suburban Furnace SH-42/ SH-42F; 12 Volt DC MFR # 232726
15. #APPLIANCE COMPONENTS RV; 10-32 Elastic Stop Nut MFR # 121329
16. #APPLIANCE COMPONENTS RV; Nut Hex 2-56 Elastic Stop MFR # 121951
17. #INSULATOR SAIL SW MFR # 230877
18. #Screw; Use With Suburban Furnace Part Numbers NT-16SE/ NT-20SE; # 2; 56 Inch x 5/8 Inch; Hex Head MFR # 121247 Superseded: see description
19. #Furnace Low Air Flow Switch; For Suburban SF20/ 25/ 30/ 35/ 42 And SF20F/ 25F/ 30F/ 35F/ 42F Series Furnaces; Also Use New Number 525003 MFR # 233382 Superseded: see description
20. #Furnace Low Air Flow Switch; For Suburban Furnace SF-20/ SF-25/ SF-30/ SF-35/ SF-42/ SF-20F/ SF-25F/ SF-30F/ SF-35F/ SF-42F MFR # 232261
21. #APPLIANCE COMPONENTS RV; Blower Rm Air MFR # 390867BK
22. #Furnace Blower Wheel; For Suburban Furnace SH-35/ SH-42/ SH-35F/ SH-42F MFR # 350198
23. #Furnace Fan Switch; For All V-Series Suburban Furnaces (After Serial Number 952202951) MFR # 232351
24. #APPLIANCE COMPONENTS RV; Suburban Module Board Pan MFR # 101663
25. #APPLIANCE COMPONENTS RV; Insul Mod Board MFR # 70807
26. #ignition Control Circuit Board; Replacement For Suburban Furnace SF-Series (After Serial Number 003805481); 12 Volt DC MFR # 520820
27. #Ignition Control Circuit Board - Fits Suburban Water Heaters MFR # 520820MC
28. #UIB WITH FAN CONTROL MFR # FAN50PLUS
29. #ignition Control Circuit Board; Replacement For Suburban 520741 Or 520820 Boards And Fits All Suburban 12 Volt Furnaces; Will Not Replace 24 Volt AC Boards MFR # 521099
30. #APPLIANCE COMPONENTS RV; Insul Cap MFR # 70973
31. #APPLIANCE COMPONENTS RV; Bushing MFR # 70362
32. #APPLIANCE COMPONENTS RV; Bushing Heyco#1214 Strain MFR # 231809
33. #APPLIANCE COMPONENTS RV; Gskt Firewall/Chamber MFR # 70808
34. #Nut; For Suburban Furnace NT-45S MFR # 121271
35. #APPLIANCE COMPONENTS RV; CHAMBER MFR # 21172
36. #APPLIANCE COMPONENTS RV; Chamber Asbl - Final MFR # 21172BK
37. #SUBURBAN FURNACE LIMIT SWITCH 232735 (SH42/ SH42F) MFR # 232735
38. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
39. #FULL SIZE SHORT BED TENT MFR # 110750
40. #APPLIANCE COMPONENTS RV; Tube Vent MFR # 51478S

Exploded View › Cabinet Assembly

Components

12 items

1. #APPLIANCE COMPONENTS RV; Cab Front MFR # 101907
2. #FRONT ASM,CABINET USE 101907 MFR # 101914 Superseded: see description
3. #Wall Thermostat; Heat; Not Programmable; Mechanical Readout; Black MFR # 161210
4. #Wall Thermostat; Single Stage; For Heat Control; Mechanical Readout; White Case MFR # 161154
5. #Screw; For Use With Suburban Furnace Vent NT.12SE/ NT-16SE/ NT-20SE; #10 x 3/4 MFR # 121853 Superseded: see description
6. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
7. #APPLIANCE COMPONENTS RV; Cab/Labels MFR # 101915
8. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733
9. #NR627947 RETAINER-PANEL-12 UPR-BLK MFR # 50715
10. #Furnace Access Door; Replacement For Suburban SH-35/ SH-42 Furnace; Black MFR # 6267AEB
11. #APPLIANCE COMPONENTS RV; Door Sh Rv Furnace 1 Pk MFR # 6267ACW
12. #Furnace Access Door; Replacement For Suburban SH-35 Furnace; White MFR # 6267APW

Exploded View › Burner Assembly

Components

22 items

1. #APPLIANCE COMPONENTS RV; Nut #8-32 Keps MFR # 121694
2. #MANIFOLD ASBL, COMPLETE MFR # 171599
3. #APPLIANCE COMPONENTS RV; Screw 8-18 X 1/2 Ph Ph MFR # 121651
4. #ORFUS SF20 FURNACE MFR # 180308
5. #Furnace Gasket; Burner Cover Gasket Kit; Fits Suburban Furnace SF-30F MFR # 520799
6. #Furnace Gasket; Furnace Burner Access Door Gasket; Fits Suburban Furnace SF-20/ SF-25/ SF-30/ SF-35/ SF-42/ SF-20F/ SF-25F/ SF-30F/ SF-35F/ SF-42F/ SH35/ SH42/ SH35/ SH42F/ SHD2542; Also Use New Number 525010 MFR # 70811 Superseded: see description
7. #APPLIANCE COMPONENTS RV; Tinnerman U Type MFR # 121704
8. #APPLIANCE COMPONENTS RV; Plate Sec Air MFR # 63198
9. #APPLIANCE COMPONENTS RV; Plate Sec Air MFR # 62933
10. #Furnace Duct Cover Plate; Fits Suburban SF-Series Furnace MFR # 62935
11. #Igniter Electrode; For Suburban Furnace SF-20/ SF-25/ SF-30/ SF-35/ SF-42/ SF-20F/ SF-25F/ SF-30F/ SF-35F/ SF-42F (Above Serial Number 934701426); Without Gasket; Also Use New Number 525009 MFR # 232286 Superseded: see description
12. #Igniter Electrode; For Suburban Furnace Models SF-20/ SF-25/ SF-30/ SF-35/ SF-42/ SF-20F/ SF-25F/ SF-30F/ SF-35F/ SF-42F (Above Serial Number 934701426); Without Gasket; Also Use New Number 525009MC MFR # 232286MC Superseded: see description
13. #Furnace Burner; For Suburban SF-42/ SF-42F/ SF-42Q/ SF-42FQ/ SH-42/ SH-42F/ SHD-2542 MFR # 10799
14. #APPLIANCE COMPONENTS RV; Grommet MFR # 71020
15. #GROMMET USE 71020 MFR # 70963 Superseded: see description
16. #SUBURBAN GAS VALVE MFR # 161133
17. #Furnace Gas Valve; For Use With Suburban Furnace SF-20/ SF-25/ SF-30/ SF-35/ SF-42 With Serial Numbers After 971303163; Also Use New Number 525044 MFR # 161122 Superseded: see description
18. #APPLIANCE COMPONENTS RV; Gas Valve MFR # 161070
19. #Gas Valve Solenoid; White Rodgers; Fits To Suburban Furnaces Gas Valve 161109/ 161122; 0.48 Amp/ 12 Volt DC; Maximum 1/2 PSI MFR # 521074
20. #Furnace Gas Inlet Pipe; For Use With Suburban Furnaces SH35 And SH42 MFR # 171603 Superseded: see description
21. #CLAMP WIRE MFR # 62180
22. #SCREW 8-18X1/2 SELF DRILL MFR # 121857