All Grade Mechanical & Contracting

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All Grade Mechanical & Contracting is a family owned and operated business that provides efficient and reliable mobile heavy mechanical & auto electrical services for heavy plant, construction equipment, trucks, agriculture, Airport GSE across Brisbane.

Johnny out on site keeping this big rig moving 💪🏼⚡️
30/04/2026

Johnny out on site keeping this big rig moving 💪🏼⚡️

On site at Stradbroke Island for our friends over at QYAC giving a little bit of love to one of their Caterpillar 299D2 ...
30/03/2026

On site at Stradbroke Island for our friends over at QYAC giving a little bit of love to one of their Caterpillar 299D2 🔧
✔️ Repaired all temperature and heat concerns
✔️ Addressed and insulated damage caused by heat transfer
✔️ Found fuel bowl sucking air – potential breakdown avoided
✔️ Repaired door latch in cab
✔️ Tracked down and fixed an aircon wiring gremlin (cold air restored ❄️)

Proactive fixes, preventing downtime and keeping the machine reliable.
Back to work and running right.

Komatsu D65EX A/C issue sorted ✔️Cold at first, but cutting out after 10 mins - traced to a completely blocked condenser...
26/03/2026

Komatsu D65EX A/C issue sorted ✔️

Cold at first, but cutting out after 10 mins - traced to a completely blocked condenser. Thoroughly cleaned, system performance tested and back in service. ❄️🔧

Engine overheating diagnosed ✔️Found the viscous fan had been installed backwards. Re-fitted correctly, bled the system,...
24/03/2026

Engine overheating diagnosed ✔️

Found the viscous fan had been installed backwards. Re-fitted correctly, bled the system, and returned it to service. 🔧

Wacker ST31 in for A/C issues ✔️Replaced leaking evap, low side pressures diagnosed and compressor replaced, then carrie...
20/03/2026

Wacker ST31 in for A/C issues ✔️

Replaced leaking evap, low side pressures diagnosed and compressor replaced, then carried out a full A/C service.

System sorted and back to work ❄️

Some snaps from an excavator down day for our mates at BUMA.Nothing beats getting hands-on with the heavy gear 🔧💪🏼
18/03/2026

Some snaps from an excavator down day for our mates at BUMA.
Nothing beats getting hands-on with the heavy gear 🔧💪🏼

Komatsu Moxy in for a full service. New injectors fitted and accumulator faults diagnosed and repaired.Serviced properly...
11/03/2026

Komatsu Moxy in for a full service.
New injectors fitted and accumulator faults diagnosed and repaired.

Serviced properly. Faults sorted. Back to work. 🔧✔️

Intermittent engine cut-out on this JCB 220X traced back to an aftermarket height limiter coil shorting out. Repaired th...
09/03/2026

Intermittent engine cut-out on this JCB 220X traced back to an aftermarket height limiter coil shorting out.

Repaired the coils, rewired it out of the ignition circuit and carried out testing to confirm the fault was eliminated.

Diagnosed properly. Repaired correctly. Back in service. ⚡️✔️

These 2 Hitachi 50T excavators through for 2000hr services ✔️Heavy gear. Done right. 🔧
05/03/2026

These 2 Hitachi 50T excavators through for 2000hr services ✔️

Heavy gear. Done right. 🔧

Diagnosed a neutralising fault on a ZF transmission on this Hyundai HL780-9 loader. Our sparky traced it back to incorre...
03/03/2026

Diagnosed a neutralising fault on a ZF transmission on this Hyundai HL780-9 loader. Our sparky traced it back to incorrectly shimmed speed sensors.
A new sensor was fitted, re-shimmed properly and she’s back on the job 💪🏼

Address

Burpengary East, QLD
4505

Telephone

+61422027325

Website

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