This test is carried out to check engine power & transmission & hydraulic efficiency.
Place the transmission in 4th gear & hold the brakes – compare engine at full RPM in neutral & then compare under load by engaging Forward & then combining Forward & Hydraulic by crowding the loader bucket to full extent & holding against the stops.
TIP – while checking a Borg Warner shuttle transmission on a 580C,D,E or K compare FWD to REV – often Rev is still like new & will load better than a worn out FWD 😉
A worn out Forward clutch pack – Borg Warner Shuttle
580E;K
Hi rpm no load – 2370 rpm
Transmission – 2100 rpm
Hydraulic – 2230 rpm
Combined – 1500 rpm min
580LE
Hi rpm no load – 2425 rpm
Transmission – 2140 rpm
Hydraulic – 1920 rpm
Combined – 1040 rpm min
580SLE – Turbo
Hi rpm no load – 2425 rpm
Transmission – 2040 rpm
Hydraulic – 2230 rpm
Combined – 1410 rpm min