Machine models

Cat 345C MH: scrap tools, magnet controls and transport

Match the 345C MH front to the scrap attachment

The 345C MH's long front changes attachment selection. Caterpillar recommends the smaller 1.5 yd³ orange-peel grapple for its 18 m front and the larger 2.0 yd³ grapple for the 16.5 m front. Greater reach does not preserve the same tool recommendation.

A seller offering the larger grapple with the longer stick should supply the applicable lifting information instead of treating both published combinations as interchangeable.

The documented Walker magnet application is also tied to the shorter front. Its hydraulic generator and the grapple's rotation circuit are separate systems: a successful magnet demonstration does not establish that grapple rotation works, or vice versa. Inspect the controls and fitted tool connections for the intended job.

The original material-handler design includes dedicated circuits; it is more than a conventional excavator carrying a longer stick.

The C13 ACERT replaces the 3176C used in the earlier 345B Series II MH. A related owner's account involving the older engine cannot establish the cause of a C13 fault. The manufacturer describes electronic control of mechanically actuated unit injection on the C13.

Use that identification when obtaining engine-specific diagnostic information.

Source: Cat AEHQ5637-01, August 2007, 345C MH engine, fronts, circuits and tool applications.

The magnet monitor distinguishes duty cycle, heat and electrical faults

The magnet monitor has separate indications for generator heat, voltage faults and ground faults. Its duty-cycle indicator refers to magnet-on time exceeding 7.5 minutes within ten minutes. Record which indicator appears; “magnet stopped” is too broad to distinguish the operator's duty cycle from an electrical fault.

A ground-fault indication can concern the magnet, generator or connecting cable, so replacing a magnet solely from that description would skip part of the circuit.

Transport preparation depends on the cab arrangement. Caterpillar describes a fixed riser that can tilt forward for shipping and separately lists an optional hydraulic riser. They are different mechanisms.

Confirm the fitted arrangement before accepting a transport height quoted for a tipped cab. The track frames can also be removed for shipping; an operating-width photograph does not describe the disassembled transport load.

Scrap-yard cooling equipment needs its own inspection. The oil cooler and condenser slide outboard to expose the gap beside the radiator. The reversing fan is optional in the original equipment list.

A fan running in a demonstration therefore does not prove automatic reversal is installed, and a clean outer screen alone leaves the space between the cores unexamined.

Source: Caterpillar archived 345C MH equipment and operating features.

Earlier reference entries and original manufacturer corrections
Model and field	Earlier entry	Manufacturer figure and scope	Source
345C MH Gauge	146 lb/in	3,720 mm (146 in), track gauge; length unit, not force per length	Original document
345C MH Track Shoes	30 lb/in	750 mm (30 in), shoe width; length unit, not force per length	Original document
345C MH Maximum Reach	59	18 m (59 ft),9.1mstick;shorter7.3mstick gives16.5mreach	Original document

Entries in this reference
Listing-entry count
1

Short answer

Cat 345C MH: scrap tools, magnet controls and transport: material handler.

Selected configuration figures
Configuration	Documented field and quantity
345C MH	Net Power - ISO 9249 345 hp Operating Weight 126,615 lb

345C MH specification matrix — Dimensions and weight
Specification	345C MH
Ground Clearance	2.4 ft
Shipping Length	45.5 ft
Operating Height - To Top Of Cab (Fixed)	17.8 ft
Operating Width	14.65 ft
Counterweight Clearance	4.8 ft
Height - Top Of Exhaust	11.8 ft
Rear - Carrier To End Of Boom	45.48 ft
Shipping Height - Cab Tipped	11.83 ft
Shipping Width	13.1 ft
Tail Swing Radius	12.3 ft

Track
Specification	345C MH
Gauge	3,720 mm (146 in), track gauge; length unit, not force per length
Overall Track Length	17.61 in
Track Shoes	750 mm (30 in), shoe width; length unit, not force per length
Rollers - Each Side	9
Shoes Per Side	52

Engine
Specification	345C MH
Displacement	763 cu in
Bore	5.1 in
Stroke	6.2 in
Net Power - ISO 9249	345 hp
Net Power - SAE J1349	345 hp
Engine Model	Cat C13 ACERT
Net Power - Eec 80/1269	345 hp
Net Flywheel Power	345 hp

Performance
Specification	345C MH
Maximum Drawbar Pull	74,412 lb

Swing Mechanism
Specification	345C MH
Swing Speed	8.6 rpm
Swing Torque	109,900 lb-ft

Weights
Specification	345C MH
Operating Weight	126,615 lb
Upper	34,390 lb
Counterweight	26,455 lb
Undercarriage - Including Carbody	46,690 lb
Two-Piece Front - With Cylinders	19,080 lb
Stick	6,034 lb

Hydraulic System
Specification	345C MH
Pilot System - Maximum Flow	11.36 gpm
Pilot System - Maximum Pressure	596 psi
Maximum Pressure - Travel	4,982 psi
Maximum Pressure - Swing	4,554 psi
Maximum Flow - Each Of Two Pumps	95 gpm
Maximum Pressure - Implements	4,982 psi
Rotate Circuit For Grapple Maximum Flow	11 gpm
Generator Auxiliary Pump Maximum Flow	43 gpm
Generator Auxiliary Pump Maximum Pressure	4,000 psi
Rotate Circuit For Grapple Operating Pressure	4,000 psi

Brakes
Specification	345C MH
Brake Standards	Meets the following standards: SAE J1026 APR90

Operating Specifications
Specification	345C MH
Maximum Reach	18 m (59 ft),9.1mstick;shorter7.3mstick gives16.5mreach
Generator Set	33.5 hp
Cab Riser - Fixed	6.5 ft

Service Refill Capacities
Specification	345C MH
Cooling System	16 gal
Fuel Tank	186 gal
Final Drive - Each	4 gal
Hydraulic Tank	64 gal
Hydraulic System - Including Tank	150 gal
Engine Oil	11.6 gal
Swing Drive	2.6 gal

Cab
Specification	345C MH
Cab/Fogs Standards	Optional operator protection guards meeting SAE J1356 and ISO 3449

Drive
Specification	345C MH
Maximum Travel Speed	2.7 mph
Maximum Drawbar Pull	74,380 lb