DAF wet pack specifications vary wildly between tipping and walking floor applications. Misreading these specs leads to expensive failures and stranded trucks.
Tank capacity alone tells you nothing about system capability. Component matching determines whether your hydraulics work properly or leave you calling recovery services.
Let’s break down what each specification means for DAF installations.
In this guide:
Tank specifications
DAF tipping kits use 190-litre rear cabin-mounted tanks measuring 110cm wide by 65cm high. Walking floor systems need 200-litre side-mounted units at 38cm wide by 75cm high.
Tank positioning affects weight distribution and chassis clearance. Side-mounted tanks suit walking floors because operators need constant hydraulic power without affecting payload balance.
Pump selection differences
Tipping applications run nine-piston pumps rated at 85L/1000 RPM and 250 bar working pressure. Walking floor systems demand bent-axis pumps delivering 108L/1000 RPM at 350 bar.
Higher pressure and flow requirements for walking floors reflect continuous operation needs. Tipping pumps work intermittently — walking floor pumps run for extended periods, pushing material.
PTO ratio variations
Standard tipping PTOs use 1:1 ratios, matching engine speed directly to pump input. Walking floor PTOs specify 1:1.2 ratios for optimal pump speeds during continuous operation.
Overdrive ratios prevent pump over-speeding during highway cruising with PTO engaged. Direct-drive ratios suit tipping, where engagement happens at a standstill.
Related: Twin-gear PTOs for trucks and working vehicles – a guide
Control system requirements
Tipping kits include directional valves rated at 180 bar working pressure with 230 bar maximum. Walking floors need inline pressure relief valves adjustable from 50-380 bar.
Variable pressure settings let operators fine-tune walking floor speeds for different materials. Fixed settings work for tipping where cylinder movement stays predictable.
Gearbox compatibility
Both systems fit ZF AS-Tronic and Traxon transmissions, but shaft lengths vary. AS-Tronic boxes need 248mm or 270mm shafts, depending on model year.
Traxon units from 2017 onwards use standardised mounting but require specific PTO programming. Check your gearbox code against compatibility lists before ordering.
Port sizing logic
Walking floor systems use larger ports throughout — pump inlets at 1¼” BSP versus 1″ on tipping kits. Return lines stay consistent at 1½” BSP for both applications.
Larger ports prevent cavitation during high-flow walking floor operation. Tipping systems work fine with smaller ports due to lower continuous flow demands.
Related: Tipping gear: powering your hydraulic operations
Additional components
Walking floor kits include pressure relief valves, T-adapters, and reducing bushes, not found in tipping specifications. Each component serves specific flow-splitting or pressure-limiting functions.
Tipping kits keep things simple with directional valves and basic fittings. Complexity increases with operational demands — walking floors need precise control that basic valves can’t provide.
Making sense of specifications
Match your DAF model to the correct kit first — CF, XF, and XG variants use identical hydraulic specifications. Euro ratings from three to six share the same mounting points and connections.
Consider your primary use before selecting components. Occasional tipping needs basic specifications, but regular hydraulic work demands walking floor-grade components for reliability.
Additional reading: DIY hydraulic wet kits – a guide to our products
