1985 Ranger 4X4 with A4LD transmission , 2.8 V6 engine & manual lever in floor for 4X4 & Hi & Low range . Transmission seems to shift & hold properly in forward gears . With transfer case in Hi range & the truck on the level or a very slight incline reverse works as long as you are easy on the gas . If on a steeper incline or if you goose the engine reverse lets go & just slips .
With the transfer case in Low range the truck will back up steep inclines & will spin the tires without slipping . I would think if it has a pressure problem or worn clutches or bands causing the problem that it would also slip in Low range before spinning the tires . Fluid has been changed & is at proper level on the dipstick . What do you think ? TIA
Also have torqued the bands & valve body to specs.