Suzuki Wagon R Manual page 2208

3) Remove relief valve (1), spring (2) and retainer (3) by remov-
ing circlip (4).
Assembly
1) Wash, clean and then dry all disassembled parts.
2) Apply thin coat of engine oil to inner and outer rotors, oil seal
lip portion, inside surfaces of oil pump case and plate.
3) Install outer (1) and inner rotors (2) to oil pump case.
4) Apply engine oil to relief valve (1) and spring (2), and install
them with retainer (3) and new circlip (4) to rotor plate (5).
5) Install rotor plate and tighten all bolts to specified torque.
After installing plate, check to be sure that rotors turn
smoothly by hand (0.3 N·m (0.03 kg-m, 0.25 lb-ft) torque or
below).
Tightening torque
Oil pump rotor plate bolt (a): 11 N·m (1.1 kg-m, 8.0 lb-ft)
ENGINE MECHANICAL (M13 ENGINE) 6A2-41