Wheel Loader Hydraulic Pump Replacement Cost: Cat, Deere, Komatsu, and Volvo

A wheel loader with a failing hydraulic pump gets weak in a hurry. Boom lift slows down. Steering gets stiff. On a tandem pump machine, one pump can go while the other holds on, masking the problem until the second unit follows. By the time you're calling a shop, you're usually looking at a job that takes the machine out of service for 2 to 4 days.

Here's what the repair should cost, broken down by machine class and brand.

What the Job Involves

Most wheel loaders use a tandem gear pump or variable-displacement piston pump mounted directly to the engine. Getting to it requires draining and collecting the hydraulic oil, removing the pump access panel or front covers, disconnecting all hydraulic lines, and unbolting the pump from the PTO drive or direct mount. The replacement goes in, lines reconnect, the system fills with clean oil, and the shop runs a pressure test on every circuit before signing off.

The full job runs 8 to 20 hours depending on machine size and pump configuration. Larger loaders with rear-mounted pumps or complex tandem configurations take longer. Smaller compact loaders are more accessible.

If the pump failed by throwing internal metal debris, the tank, lines, and all cylinder rams need a thorough flush before the new pump goes in. Skipping this step puts metal particles straight into the new pump and kills it within a few hundred hours.

Repair Cost by Machine Class

Shop rates for wheel loader hydraulic work run $115 to $165 per hour in most markets.

Machine Class	Example Models	Labor Hours	Parts Cost	Total Estimate
Compact loader (1.0-2.0 yd3)	Cat 906/910, JD 324G/344G, Volvo L25/L35	6-10 hrs	$1,800-$4,500	$2,500-$6,200
Mid-size loader (2.5-4.5 yd3)	Cat 930/950GC/962, JD 444/544/644, Komatsu WA320/WA380, Volvo L90/L120	10-18 hrs	$3,500-$9,000	$4,650-$12,000
Large loader (5.0+ yd3)	Cat 972/980, JD 744/844, Volvo L150/L220, Komatsu WA470/WA500	14-24 hrs	$7,000-$18,000	$8,600-$22,000

Parts ranges cover quality aftermarket and reman pump assemblies. OEM new units add 30 to 60 percent to parts cost. System flush for metal contamination adds $800 to $2,000 and is not included above. Southeast shop rates of $115 to $165 per hour.

Cat 950GC and 962 Hydraulic Pump: Detailed Breakdown

The Cat 950GC and 962 are among the most common wheel loaders in the Southeast market, so a specific breakdown is useful here.

These machines use a variable-displacement piston pump for the work circuit and a separate gear pump for steering. If only the work circuit pump fails, the steering pump is often left alone. If the machine is showing weak lift and steering at the same time, both pumps may need attention.

Repair Option	Parts Cost	Labor	Total
Work pump only (reman or quality aftermarket)	$3,500-$7,500	10-16 hrs	$4,650-$10,100
Work pump (OEM new)	$7,000-$12,500	10-16 hrs	$8,150-$15,100
Work pump plus steering pump	$4,500-$10,000	12-20 hrs	$5,880-$13,300

Based on Southeast shop rates of $115 to $130 per hour for Cat-spec work. System flush not included.

Tandem Pumps: When One Goes, Watch the Other

Many wheel loaders, particularly Komatsu and John Deere mid-size models, use tandem gear pumps where two pump sections share a single housing and drive shaft. When one section fails, the other is under the same wear conditions and often close behind.

Shops typically recommend replacing the complete tandem assembly when one section fails on a machine over 8,000 hours. The cost difference between replacing one section and replacing the complete assembly is smaller than most owners expect, and the labor is identical. You're already paying for the hours whether you replace one section or two.

Symptoms of a Failing Wheel Loader Hydraulic Pump

• Slow or weak boom lift, especially under load
• Stiff or unresponsive steering at low engine RPM
• Hydraulic oil overheating faster than normal
• Unusual noise from the pump area: whining, growling, or knocking
• Low system pressure reading confirmed on a test gauge
• Hydraulic oil that looks milky or has a burnt smell
• Visible external leak around the pump body or drive shaft seal

Slow boom lift and stiff steering are sometimes caused by low oil level, a clogged filter, or a faulty relief valve rather than a failed pump. Have the shop check those first. A pressure test takes less than an hour and confirms the diagnosis before you approve pump replacement.

Does This Repair Make Sense on Your Loader?

A $7,000 hydraulic pump repair on a Cat 950GC worth $140,000 is an easy decision. The repair cost is around 5 percent of the machine's value.

The math is different on an older machine with 18,000 hours, worn tires, and other deferred maintenance. A $10,000 pump job on a loader worth $45,000-$55,000 is closer to 20 percent of market value. Before you approve it, know what the machine is worth and what else it needs.

Run a free valuation on your wheel loader at EquipBook. Trade-in, private party, and dealer retail values for Cat, John Deere, Komatsu, and Volvo loaders in under 60 seconds. Compare the number against your repair quote and the machine's total condition picture before you commit.

Get a Cost Estimate Before You Call the Shop

EquipBook's free repair cost estimator covers hydraulic pump jobs, final drive replacements, and other major repairs across wheel loaders and most common heavy equipment. Enter your machine, describe the issue, and get a labor and parts range you can compare against any shop quote.