5-12 Published 04-04-2017, Control # 446-09
LUBRICATION RT770E OPERATOR MANUAL
Item
Lube Point 
Description
Figure 
No.
Approved 
Lubricant
Lube 
Capacity
Lube Interval Application
Drive Train
20a
20b
 a. Engine 
Crankcase
b. Filter
Figure 5-3
EO-15W/40
Engine Oil 
SAE 15W-40
T3 Engine -
6829003483
T4 Engine - 
6829104182
18.9 l
(20 qt)
• Check level every 10 
hours or daily
• Drain, fill and replace 
filter every: 500 hours 
(0-500 ppm sulfur 
fuel); 400 hours 
(500-5000 ppm sulfur 
fuel); 250 hours 
(>5000 ppm sulfur 
fuel)
• Through fill cap to 
FULL mark on 
dipstick
• Filter located on 
left side of frame 
beneath radiator
21a
21b
a. Transmission, 
Torque 
Converter, 
Dipstick
b. Filter
Figure 5-3
HYDO
Hydraulic Oil
6829006444
37.9 l
(40 qt)
• Check level every 10 
hours or daily
• Drain and refill every 
1000 hours or 6 
months
• Change transmission 
filter after first 50 and 
100 hours of service, 
then every 500 hours 
thereafter
Through fill pipe to 
FULL mark on 
dipstick
NOTE:
• Check the transmission fluid level with engine running at 850 rpm idle and the converter oil at 82°C to 93°C (180°F to 200°F). Do 
not attempt an oil level check with cold oil. To bring the oil temperature to this range, it is necessary to either work the crane or 
stall the converter. Converter stall should be accomplished by engaging shift lever in forward high range with the brakes applied 
and then accelerating the engine to half or three-quarter throttle. Hold the stall until the required converter temperature is 
reached and stabilized. (Do not operate the converter at stall condition for longer than 30 seconds at one time. Shift to neutral for 
15 seconds and repeat the procedure until the desired temperature is reached. Excessive temperature, i.e, 120°C (250°F) 
maximum will cause damage to transmission clutches, fluid, converter and seals.)
• Drain the oil at 65°C to 93°C (150°F to 200°F).
• Transmission filters are located on the outside left hand frame in the area of the hydraulic oil cooler inside left hand engine cover.
• To add fluid:
a. Fill to FULL mark on dipstick
b. Run engine at 850 rpm to prime torque converter and lines
c. Check oil level with engine running at 850 rpm and converter oil at 82°C to 93°C (180°F to 200°F). Add oil to bring
oil level to FULL mark on dipstick.
22
Engine Cooling 
System and SCA 
Levels
Figure 5-3
AFC 50/50
50/50 Blended 
Fully 
Formulated 
Antifreeze 
Coolant
6829101130
SCA 
6829012858
37.9 l
40 qt
• Check coolant level 
every 10 hours or 
daily
• Check SCA levels 
every 500 hours
• Check coolant for 
contamination every 
1000 hour
See Service Manual
23
Coolant Strainer 
(Cab Heater)
Figure 5-3 --- ---
Clean strainer screen 
after first 100 hours and 
every 2000 hours or 12 
months intervals 
thereafter.
Close shutoff valves. 
Unscrew hex plug to 
clean filter.