Detailed Parts List for Caterpillar RP7500E Generator

Please note that all caterpillar portable generators were discontinued back in 2020
Most smaller parts are part of a larger group (i.e. smaller parts may not be purchased individually)
Parts listed in this page are for the EPA model (not the CARB model)

Table of Contents

Engine Cylinder Assembly (d)

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
3	Cover sub-assembly, cylinder head	N/A	1	501-5426	Unknown	COVER-GP-CYL-HD	TBD
4	Gasket, cylinder head cover	501-5425	1
6	Bolt	N/A	4
	—————————————————–
5	Tube, breather	511-8860	1	N/A		N/A	TBD
	—————————————————–
1	Head sub-assembly, cylinder	N/A	1	530-1267	Unknown	HEAD-GP-CYL-BSC	TBD
2	Gasket, cylinder head	511-7251	1
7	Stud	N/A	2
8	Stud	N/A	2
9	Pin	N/A	2
10	Bolt, cylinder head	N/A	4
	—————————————————–
11	Spark Plug	511-7297	1	N/A	Unknown	N/A	TBD
	—————————————————–
12	Gasket, cylinder head cover	N/A	1	N/A	Unknown	N/A	TBD
	—————————————————–
13	Retainer	N/A	1	530-1256	Unknown	RETAINER-GP	TBD
14	Bolt	N/A	1

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Crankcase Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
3	Sensor, engine oil	N/A	1	512-8285	815683021781	SENSOR-GP-LEVEL	$23.35
10	Bolt	501-5425	2
20	Nut	N/A	1
	—————————————————–
7	Arm, governor	N/A	1	512-8286	815683021798	LEVER-GP-CAL	$7.24
8	Washer, flat	N/A	1
9	Cotter	N/A	1
12	Seal, oil	N/A	1
	—————————————————–
2	Seal, oil	N/A	1	501-5442	815683021804	BEARING-GP-B	$7.30
11	Bearing, deep groove ball	N/A	1
	—————————————————–
1	Crankcase sub-assembly	N/A	1	512-8288 (old: 530-1246)	815683021811	CRANKCASE-GP	$164.29
4	Plug, rubber	N/A	1
5	Drain pipe	N/A	1
6	Bolt, drain plug	N/A	3
13	Clip	N/A	1
16	Washer, flat	N/A	2
19	Drain bolt	501-5404	1
21	Washer, flat	501-5404	1
	—————————————————–
17	Wire Protect Cover	N/A	1	512-8289	815683021828	COVER-GP	$22.46
15	Protector, oil	N/A	1
18	Bolt	N/A	1
14	Bolt, drain plug	N/A	1

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Crankcase Cover

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Cover, crankcase	N/A	1	512-8290 (old 511-7243)	815683021361	COVER-GP-REAR	TBD
2	Gasket, crankcase	511-7243	1
4	Pin	N/A	2
5	Bolt	N/A	7
	—————————————————–
6	Bearing, deep groove ball	N/A	1	501-5443	N/A	BEARING-GP-B	TBD
8	Seal, oil	N/A	1
9	Bearing, deep groove ball	N/A	1
	—————————————————–
3	Oil dipstick, sub-assembly	501-5087	1	N/A	N/A	N/A	$2.82
	—————————————————–
7	Gear assembly, governor	511-8847	1	N/A	N/A	N/A	$22.60

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Crankshaft Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Crankshaft Assembly	N/A	1	512-8292	815683021859	CRANKSHAFT-GP	$113.62
2	Shaft Assembly, balancing	N/A	1

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Piston / Connecting Rod Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
5	Piston rings set	511-7264	1	N/A	815683021392	N/A	TBD
	—————————————————–
1	Clip, piston pin	N/A	2	512-8293		PISTON-GP
2	Piston	N/A	1
3	Pin, piston	N/A	1			PISTON-GP
	—————————————————–
4	Road, connecting	N/A	1	512-8294		ROD-GP-CONN
6	Bolt, connecting rod	N/A	2

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Camshaft Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Camshaft assembly	N/A	1	530-1268	Unknown	CAMSHAFT-GP	TBD
2	Valves set	N/A	1
3	Guide, seal	N/A	1
4	Spring, valve	N/A	2
5	Seat, valve spring	N/A	2
6	Tappet, valve	N/A	2
7	Lifter subassembly, valve	N/A	2
8	Rocker shaft	N/A	2
9	Rotator, valve	N/A	2
10	Rocker arm, valve

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Recoil Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Starter assembly, recoil	N/A	1	512-8296	Unknown	PULLEY-GP-CSHAFT	TBD
2	Bolt	N/A	3

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Shroud Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Shroud	N/A	1	512-8297	815683021903	SHROUD-GP-AIR	TBD
2	Shroud, cylinder body	N/A	1
3	Bolt	N/A	1
4	Bolt	N/A	2
5	Clip	N/A	2

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Carburetor Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Caburetor assembly	511-7277	1	512-8298	815683021910	CARBURETOR-GP-B	TBD
2	Gasket, carburetor	511-7269	1
3	Plate, carburetor insulator	511-7271	1
4	Gasket, inlet	511-8857	1
5	High altitude kit (3k-6kft)	501-5088	1
6	High altitude kit (6k-8kft)	501-5089	1

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Air Cleaner Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Gasket, air cleaner	511-7286	2	512-8299	815683021927	CLEANER-GP-AIR-B	TBD
2	Cleaner, air	N/A	1
3	Nut	N/A	2
4	Filter, air cleaner	511-7290	1

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Muffler Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
3	Gasket, exhaust outlet	511-7291	1	512-8300	815683021934	MUFFLER-GP	TBD
4	Bolt	N/A	2
5	Bolt	N/A	2
8	Bracket, muffler	N/A	1
6	Muffler assembly	N/A	1
7	Nut	N/A	2
9	Muffler Air Guide Cover	N/A	1
10	Bolt	N/A	5
11	Spark Arrestor	501-5080	1

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Fuel Tank Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
6	Hose, fuel steam rubber	N/A	1	512-8302	815683021934	VENT-GP-FUEL	TBD
7	Rollover valve	N/A	1
8	Clamp	N/A	1
15	Clamp (* for older model only)*	N/A	1
	—————————————————–
9	Fuel cap	N/A	1	512-8303	N/A	CAP-GP-FUEL	TBD
13	Chain, fuel cap	N/A	1
14	Clip. fuel cap chain	N/A	1
	—————————————————–
1	Bolt	N/A	4	501-5423	N/A	TANK-GP-FUEL-B	TBD
2	Washer	N/A	4
3	Bush	N/A	4
4	Sleeve, fuel tank rubber	N/A	4
5	Tank, fuel	511-7281	1
12	Leveler Gauge, fuel	501-5422	1
	—————————————————–
10	Strainer, Fuel	511-8851	1	511-8851	815683021514
	—————————————————–
11	Fuel Outlet nozzle	511-8853	1	511-8853	815683021521

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Flywheel Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
5	Bolt	N/A	2	512-8305	N/A	COIL-GP-IGNITION	TBD
6	Coil, ignition	N/A	1
7	Cap, spark plug	N/A	1
	—————————————————–
1	Nut, flywheel	N/A	1	512-8306	N/A	FLYWHEEL-GP	TBD
2	Cup, starter	N/A	1
3	Impeller	N/A	1
4	Flywheel, sub-assembly	N/A	1
	—————————————————–
8	Bolt	N/A	1	512-8307	N/A	CHARGER-GP-BTRY	TBD
9	Clamp, charge coil	N/A	1
10	Bolt	N/A	2
11	Coil sub-assembly, charge	N/A	1

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Governor Control Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Control assembly, throttle	N/A	1	512-8309	815683022016	GOVERNOT-GP-E	TBD
2	Bolt	N/A	3
3	Spring, throttle valve returning	N/A	1
4	Rod, governor	N/A	1
5	Spring, governor	511-7275	1
6	Support sub-assembly, governor	N/A	1
7	Bolt, governor support	N/A	1
8	Nut	N/A	1

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Frame Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Bolt	N/A	3	512-8310	815683022023	FRAME-GP	TBD
2	Clip	N/A	3
3	Frame assembly	N/A	1
29	Protect rubber		1
30	Nylon nut	N/A	2				TBD
31	Isolator	N/A	2
33	Rubber cushion	N/A	2
34	Cap nut	N/A	2
35	Sound absorbing cotton		2
	—————————————————–
4	Nut	N/A	4	512-8311	815683022047	ISOLATOR-GP	TBD
5	Nut	N/A	1
6	Isolator, frame	N/A	2
	—————————————————–
7	Left side panel	N/A		512-8312	815683022054	COVER-GP-LH
8	Bolt	N/A	1
28	Washer	N/A
	—————————————————–
9	Right side panel	N/A		512-8313	N/A	COVER-GP-RH
10	Bolt	N/A
28	Washer	N/A
	—————————————————–
11	Wire, positive	N/A		501-5428	815683022078	BATTERY-GP-MTG
12A	Wire, negative (from battery)	N/A
12B	Wire, negative (from G-head)	N/A
13	Bolt	N/A
14	Battery pressure plate	501-5090
15	Battery	511-7304
37	Bolt	N/A
	—————————————————–
16	Nut	N/A		512-8315	815683022085	SUPPORT-GP-FRAME
17	Bolt	N/A
18	Nut	N/A
19	Foot, frame support bracket	N/A
20	Support bracket, frame	N/A
	—————————————————–
21	Support bracket, ATR cleaner	N/A		512-8316	815683022092	SUPPORT-GP-ACL
22	Bolt	N/A
	—————————————————–
23	Handle	N/A		512-8317	815683022108	BRACKET-GP-D
24	Lock pin	N/A
25	Bolt	N/A
26	Nut	N/A
27	Foam, handle	N/A
36	Bolt	N/A
	—————————————————–			N/A	N/A	N/A
38	Foot, frame support bracket	N/A
39	Bolt	N/A
40	Nut	N/A

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Control Panel Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Bolt	512-8310	4	512-8319	815683022115	PANEL-GP-CONT-B	TBD
2	Panel sub-assembly, control	N/A	1
25	Washer	N/A	4
	—————————————————–
9	Fuel valve (individual UPC 815683021569)	511-7283	1	512-8320	815683022122	VALVE-GP-FUEL	TBD
10	Fuel valve, basement	N/A	1
11	Clamp	N/A	2
12	Tube, fuel	N/A	1
13	Tube, fuel	N/A	1
14	Jacket, rubber	N/A	1
15	Clamp	N/A	1
26	Clamp	N/A	1
	—————————————————–
5	Rain cover	511-8897	2	N/A	N/A		TBD
6	Rain cover, duplex	511-8898	2
8	Cover, panel rear	511-8894	1
16	Socket sub-assembly, power supply	511-8058	2
17	Protector, overcurrent	511-8047	2
18	Choke cable	511-8036	1
19	Timer	511-8060	1
20	Switch sub-assembly	511-8054	1
21	Socket sub-assembly, power supply	511-8057	1
22	Protector, overcurrent	511-5091	2
23	Socket sub-assembly, power supply	511-8056	1
24	LED light	501-5092	1		815683022078
27	Ground wire	530-1269	1
30	On / Off knob	501-5455	1

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Generator Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Terminal sub-assembly, grounding	N/A		N/A	N/A	N/A	TBD
2	Bolt	N/A
3	Bolt	N/A
4	Washer	N/A
6	Nut	N/A
	—————————————————–
7	Brush sub-assembly, carbon	N/A	1	501-5402	N/A	BRUSH-GP	TBD
8	Bolt	N/A	1
	—————————————————–
9	Block, terminal	N/A		N/A	N/A		TBD
10	Bolt	N/A
11	Washer	N/A
12	Motor assembly	N/A
13	Bolt	N/A
14	Bracket, motor	N/A
15	Bolt	N/A
16	Shroud, motor	N/A
22	Bolt	N/A
23	Band	N/A
24	Bolt	N/A
25	Nut	N/A
26	Lock washer	N/A
27	Ground wire	N/A
	—————————————————–
17	Bolt	N/A	1	512-8322		COVER-GP	TBD
18	Cover, motor tail	N/A	1
19	Stopper, motor right cover	N/A	1
	—————————————————–
20	Bolt	N/A	1	512-8323	815683022153	REGULATOR-GP-H	TBD
21	Regulator, voltage	511-7300	1
	—————————————————–
28	Gen head assembly (incl. items #1-27)	501-5093	1		815683021705		TBD

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Wheel Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Washer	N/A	2	512-8324	815683022160	WHEEL-GP-TIRE	TBD
2	Washer	N/A	2
3	Nut	N/A	2
4	Nut	N/A	2
6	Axle, wheel	511-7307	2
5	Wheel	N/A	2

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Starter Motor Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Motor, starting	511-8812	1	512-8325	815683022177	MOTOR-GP-ELECSTG	TBD
2	Bolt	N/A
3	Relay, starting	501-5095	1
4	Bolt	N/A

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Fuel Engine Assembly

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
E00-1	Engine, R420D-V	511-8016	1	N/A	N/A	N/A	TBD

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Tool Kit

Item #	Description	CAT Part #	Qty	CAT Grp Part #	Group UPC	Group Name	Price
1	Spark plug wrench kit	N/A	1	501-5146	N/A	TOOL-GP	TBD
2	Screwdriver	N/A	1
3	Spanner, double ended	N/A	2
4	Spanner, double ended	N/A	1
5	Tool kit bag	N/A	1
	—————————————————–
6	Funnel, filling oil	501-5147	1	N/A
	—————————————————–
7	Power cord 25′ L14-30P to (4) 5-20R	502-3692	1	N/A

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Reference Links

Caterpillar RP7500 Detailed UPDATED Parts Diagrams (cat.com)
Caterpillar RP7500 Parts Diagrams SUPERCEDED (cat.com does not allow direct linking to this page; please copy and paste; https://www.cat.com/en_US/by-industry/electric-power/product-support/port-generator-support.html )
Maintenance Kit for RP6500, RP6500E, RP7500E, RP8000E
Complete Troubleshooting Guide for Caterpillar RP7500E Portable Generators (AllThumbsDIY)
Connecting a Portable Generator to the Home Main Electric Panel – Part 1
Buying a Portable Generator Shed – Lifetime Horizontal Shed
Building a Custom Portable Generator Shed
Engine Tune up for Generac Wheelhouse 5500 / 5550 Portable Generator
Fast and Easy Fix for Your Generac Wheelhouse 5500 / 5550 Portable Generator – Part 1
Fast and Easy Fix for Your Generac Wheelhouse 5500 / 5550 Portable Generator – Part 2
How to Properly Store Flammable Fuel
What Fuel is Best for Small Engines
Make Your Own Carburetor Gasket and Save Money
Review – Neiko 10070A Torx Bit and External Torx Socket 35-piece Set
Need a new generator? Consider DuroMax XP13000EH

Keywords

rp7500 parts

Larry Dunaway

Tuesday 4th of June 2024

I need to buy the cam assembly for my Cat tractor generator RP7500e.

kevin

Thursday 13th of June 2024

Hi Larry,

According to their parts manual, I do not believe Caterpillar sells cam assembly as a standalone replacement part. You will have to check ebay, facebook marketplace or craigslist to see if anyone is getting ridding of theirs and cannibalize it.